diff --git a/webmagic-avalon/.classpath b/webmagic-avalon/.classpath
deleted file mode 100644
index 86ca9e7..0000000
--- a/webmagic-avalon/.classpath
+++ /dev/null
@@ -1,81 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-  <classpathentry kind="src" path="src/main/java" including="**/*.java"/>
-  <classpathentry kind="src" path="src/main/resources" excluding="**/*.java"/>
-  <classpathentry kind="output" path="target/classes"/>
-  <classpathentry kind="var" path="M2_REPO/javax/servlet/javax.servlet-api/3.0.1/javax.servlet-api-3.0.1.jar"/>
-  <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-  <classpathentry kind="src" path="/webmagic-scripts"/>
-  <classpathentry kind="var" path="M2_REPO/org/jruby/jruby/1.7.6/jruby-1.7.6.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jruby/jruby-core/1.7.6/jruby-core-1.7.6.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/ow2/asm/asm/4.0/asm-4.0.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/ow2/asm/asm-commons/4.0/asm-commons-4.0.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/ow2/asm/asm-tree/4.0/asm-tree-4.0.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/ow2/asm/asm-analysis/4.0/asm-analysis-4.0.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/ow2/asm/asm-util/4.0/asm-util-4.0.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jruby/joni/joni/2.0.0/joni-2.0.0.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jruby/jcodings/jcodings/1.0.10/jcodings-1.0.10.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jnr-netdb/1.1.2/jnr-netdb-1.1.2.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jnr-ffi/1.0.7/jnr-ffi-1.0.7.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jffi/1.2.7/jffi-1.2.7.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jffi/1.2.7/jffi-1.2.7-native.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jnr-x86asm/1.0.2/jnr-x86asm-1.0.2.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jnr-enxio/0.4/jnr-enxio-0.4.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jnr-constants/0.8.5/jnr-constants-0.8.5.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jnr-unixsocket/0.3/jnr-unixsocket-0.3.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/github/jnr/jnr-posix/3.0.1/jnr-posix-3.0.1.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jruby/extras/bytelist/1.0.10/bytelist-1.0.10.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/yaml/snakeyaml/1.13/snakeyaml-1.13.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/jcraft/jzlib/1.1.2/jzlib-1.1.2.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/headius/invokebinder/1.2/invokebinder-1.2.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/martiansoftware/nailgun-server/0.9.1/nailgun-server-0.9.1.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jruby/yecht/1.0/yecht-1.0.jar"/>
-  <classpathentry kind="var" path="M2_REPO/joda-time/joda-time/2.3/joda-time-2.3.jar" sourcepath="M2_REPO/joda-time/joda-time/2.3/joda-time-2.3-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jruby/jruby-stdlib/1.7.6/jruby-stdlib-1.7.6.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-cli/commons-cli/1.2/commons-cli-1.2.jar" sourcepath="M2_REPO/commons-cli/commons-cli/1.2/commons-cli-1.2-sources.jar"/>
-  <classpathentry kind="src" path="/webmagic-core"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar" sourcepath="M2_REPO/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar" sourcepath="M2_REPO/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-codec/commons-codec/1.6/commons-codec-1.6.jar" sourcepath="M2_REPO/commons-codec/commons-codec/1.6/commons-codec-1.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/google/guava/guava/15.0/guava-15.0.jar" sourcepath="M2_REPO/com/google/guava/guava/15.0/guava-15.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar" sourcepath="M2_REPO/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/us/codecraft/xsoup/0.2.0/xsoup-0.2.0.jar" sourcepath="M2_REPO/us/codecraft/xsoup/0.2.0/xsoup-0.2.0-sources.jar">
-    <attributes>
-      <attribute value="jar:file:/Users/yihua/.m2/repository/us/codecraft/xsoup/0.2.0/xsoup-0.2.0-javadoc.jar!/" name="javadoc_location"/>
-    </attributes>
-  </classpathentry>
-  <classpathentry kind="var" path="M2_REPO/org/jsoup/jsoup/1.7.2/jsoup-1.7.2.jar" sourcepath="M2_REPO/org/jsoup/jsoup/1.7.2/jsoup-1.7.2-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/assertj/assertj-core/1.5.0/assertj-core-1.5.0.jar" sourcepath="M2_REPO/org/assertj/assertj-core/1.5.0/assertj-core-1.5.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-api/1.7.6/slf4j-api-1.7.6.jar" sourcepath="M2_REPO/org/slf4j/slf4j-api/1.7.6/slf4j-api-1.7.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-log4j12/1.7.6/slf4j-log4j12-1.7.6.jar" sourcepath="M2_REPO/org/slf4j/slf4j-log4j12/1.7.6/slf4j-log4j12-1.7.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/log4j/log4j/1.2.17/log4j-1.2.17.jar" sourcepath="M2_REPO/log4j/log4j/1.2.17/log4j-1.2.17-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar" sourcepath="M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5.jar" sourcepath="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jdom/jdom2/2.0.4/jdom2-2.0.4.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-io/commons-io/1.3.2/commons-io-1.3.2.jar" sourcepath="M2_REPO/commons-io/commons-io/1.3.2/commons-io-1.3.2-sources.jar"/>
-  <classpathentry kind="src" path="/webmagic-extension"/>
-  <classpathentry kind="var" path="M2_REPO/com/alibaba/fastjson/1.1.37/fastjson-1.1.37.jar" sourcepath="M2_REPO/com/alibaba/fastjson/1.1.37/fastjson-1.1.37-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/redis/clients/jedis/2.0.0/jedis-2.0.0.jar" sourcepath="M2_REPO/redis/clients/jedis/2.0.0/jedis-2.0.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-pool/commons-pool/1.5.5/commons-pool-1.5.5.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/jayway/jsonpath/json-path/0.8.1/json-path-0.8.1.jar"/>
-  <classpathentry kind="var" path="M2_REPO/net/minidev/json-smart/1.1.1/json-smart-1.1.1.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-lang/commons-lang/2.6/commons-lang-2.6.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/mybatis/mybatis/3.1.1/mybatis-3.1.1.jar" sourcepath="M2_REPO/org/mybatis/mybatis/3.1.1/mybatis-3.1.1-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/mybatis/mybatis-spring/1.1.1/mybatis-spring-1.1.1.jar" sourcepath="M2_REPO/org/mybatis/mybatis-spring/1.1.1/mybatis-spring-1.1.1-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-core/4.0.0.RELEASE/spring-core-4.0.0.RELEASE.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-tx/3.1.1.RELEASE/spring-tx-3.1.1.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-tx/3.1.1.RELEASE/spring-tx-3.1.1.RELEASE-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-beans/4.0.0.RELEASE/spring-beans-4.0.0.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-beans/4.0.0.RELEASE/spring-beans-4.0.0.RELEASE-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-context/4.0.0.RELEASE/spring-context-4.0.0.RELEASE.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-expression/4.0.0.RELEASE/spring-expression-4.0.0.RELEASE.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-jdbc/3.1.1.RELEASE/spring-jdbc-3.1.1.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-jdbc/3.1.1.RELEASE/spring-jdbc-3.1.1.RELEASE-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-aop/4.0.0.RELEASE/spring-aop-4.0.0.RELEASE.jar"/>
-  <classpathentry kind="var" path="M2_REPO/aopalliance/aopalliance/1.0/aopalliance-1.0.jar" sourcepath="M2_REPO/aopalliance/aopalliance/1.0/aopalliance-1.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/freemarker/freemarker/2.3.19/freemarker-2.3.19.jar" sourcepath="M2_REPO/org/freemarker/freemarker/2.3.19/freemarker-2.3.19-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-test/4.0.0.RELEASE/spring-test-4.0.0.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-test/4.0.0.RELEASE/spring-test-4.0.0.RELEASE-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/aspectj/aspectjrt/1.7.2/aspectjrt-1.7.2.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/aspectj/aspectjweaver/1.7.2/aspectjweaver-1.7.2.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-webmvc/4.0.0.RELEASE/spring-webmvc-4.0.0.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-webmvc/4.0.0.RELEASE/spring-webmvc-4.0.0.RELEASE-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-web/4.0.0.RELEASE/spring-web-4.0.0.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-web/4.0.0.RELEASE/spring-web-4.0.0.RELEASE-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-context-support/4.0.0.RELEASE/spring-context-support-4.0.0.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-context-support/4.0.0.RELEASE/spring-context-support-4.0.0.RELEASE-sources.jar"/>
-</classpath>
\ No newline at end of file
diff --git a/webmagic-avalon/.project b/webmagic-avalon/.project
deleted file mode 100644
index 4e8699d..0000000
--- a/webmagic-avalon/.project
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-avalon</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
-        extraction and persistent. It can simply the development of a specific crawler. NO_M2ECLIPSE_SUPPORT: Project files created with the maven-eclipse-plugin are not supported in M2Eclipse.</comment>
-  <projects>
-    <project>webmagic-scripts</project>
-    <project>webmagic-core</project>
-    <project>webmagic-extension</project>
-  </projects>
-  <buildSpec>
-    <buildCommand>
-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
-  </buildSpec>
-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file
diff --git a/webmagic-core/.classpath b/webmagic-core/.classpath
deleted file mode 100644
index 96b7fe7..0000000
--- a/webmagic-core/.classpath
+++ /dev/null
@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-  <classpathentry kind="src" path="src/test/java" output="target/test-classes" including="**/*.java"/>
-  <classpathentry kind="src" path="src/test/resources" output="target/test-classes" excluding="**/*.java"/>
-  <classpathentry kind="src" path="src/main/java" including="**/*.java"/>
-  <classpathentry kind="src" path="src/main/resources" excluding="**/*.java"/>
-  <classpathentry kind="output" path="target/classes"/>
-  <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar" sourcepath="M2_REPO/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar" sourcepath="M2_REPO/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-codec/commons-codec/1.6/commons-codec-1.6.jar" sourcepath="M2_REPO/commons-codec/commons-codec/1.6/commons-codec-1.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/junit/junit/4.7/junit-4.7.jar" sourcepath="M2_REPO/junit/junit/4.7/junit-4.7-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/com/google/guava/guava/15.0/guava-15.0.jar" sourcepath="M2_REPO/com/google/guava/guava/15.0/guava-15.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar" sourcepath="M2_REPO/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/us/codecraft/xsoup/0.2.0/xsoup-0.2.0.jar" sourcepath="M2_REPO/us/codecraft/xsoup/0.2.0/xsoup-0.2.0-sources.jar">
-    <attributes>
-      <attribute value="jar:file:/Users/yihua/.m2/repository/us/codecraft/xsoup/0.2.0/xsoup-0.2.0-javadoc.jar!/" name="javadoc_location"/>
-    </attributes>
-  </classpathentry>
-  <classpathentry kind="var" path="M2_REPO/org/jsoup/jsoup/1.7.2/jsoup-1.7.2.jar" sourcepath="M2_REPO/org/jsoup/jsoup/1.7.2/jsoup-1.7.2-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/assertj/assertj-core/1.5.0/assertj-core-1.5.0.jar" sourcepath="M2_REPO/org/assertj/assertj-core/1.5.0/assertj-core-1.5.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-api/1.7.6/slf4j-api-1.7.6.jar" sourcepath="M2_REPO/org/slf4j/slf4j-api/1.7.6/slf4j-api-1.7.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-log4j12/1.7.6/slf4j-log4j12-1.7.6.jar" sourcepath="M2_REPO/org/slf4j/slf4j-log4j12/1.7.6/slf4j-log4j12-1.7.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/log4j/log4j/1.2.17/log4j-1.2.17.jar" sourcepath="M2_REPO/log4j/log4j/1.2.17/log4j-1.2.17-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar" sourcepath="M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5.jar" sourcepath="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jdom/jdom2/2.0.4/jdom2-2.0.4.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-io/commons-io/1.3.2/commons-io-1.3.2.jar" sourcepath="M2_REPO/commons-io/commons-io/1.3.2/commons-io-1.3.2-sources.jar"/>
-</classpath>
\ No newline at end of file
diff --git a/webmagic-core/.project b/webmagic-core/.project
deleted file mode 100644
index be61845..0000000
--- a/webmagic-core/.project
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-core</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
-        extraction and persistent. It can simply the development of a specific crawler. NO_M2ECLIPSE_SUPPORT: Project files created with the maven-eclipse-plugin are not supported in M2Eclipse.</comment>
-  <projects/>
-  <buildSpec>
-    <buildCommand>
-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
-  </buildSpec>
-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file
diff --git a/webmagic-extension/.classpath b/webmagic-extension/.classpath
deleted file mode 100644
index e6eaa7d..0000000
--- a/webmagic-extension/.classpath
+++ /dev/null
@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-  <classpathentry kind="src" path="src/test/java" output="target/test-classes" including="**/*.java"/>
-  <classpathentry kind="src" path="src/main/java" including="**/*.java"/>
-  <classpathentry kind="src" path="src/main/resources" excluding="**/*.java"/>
-  <classpathentry kind="output" path="target/classes"/>
-  <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-  <classpathentry kind="var" path="M2_REPO/com/alibaba/fastjson/1.1.37/fastjson-1.1.37.jar" sourcepath="M2_REPO/com/alibaba/fastjson/1.1.37/fastjson-1.1.37-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/redis/clients/jedis/2.0.0/jedis-2.0.0.jar" sourcepath="M2_REPO/redis/clients/jedis/2.0.0/jedis-2.0.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-pool/commons-pool/1.5.5/commons-pool-1.5.5.jar"/>
-  <classpathentry kind="src" path="/webmagic-core"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar" sourcepath="M2_REPO/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar" sourcepath="M2_REPO/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar"/>
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-  <classpathentry kind="var" path="M2_REPO/com/google/guava/guava/15.0/guava-15.0.jar" sourcepath="M2_REPO/com/google/guava/guava/15.0/guava-15.0-sources.jar"/>
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\ No newline at end of file
diff --git a/webmagic-extension/.project b/webmagic-extension/.project
deleted file mode 100644
index 67898ec..0000000
--- a/webmagic-extension/.project
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-extension</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
-        extraction and persistent. It can simply the development of a specific crawler. NO_M2ECLIPSE_SUPPORT: Project files created with the maven-eclipse-plugin are not supported in M2Eclipse.</comment>
-  <projects>
-    <project>webmagic-core</project>
-  </projects>
-  <buildSpec>
-    <buildCommand>
-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
-  </buildSpec>
-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file
diff --git a/webmagic-lucene/.classpath b/webmagic-lucene/.classpath
deleted file mode 100644
index 3807ba9..0000000
--- a/webmagic-lucene/.classpath
+++ /dev/null
@@ -1,42 +0,0 @@
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-<classpath>
-  <classpathentry kind="src" path="src/main/java" including="**/*.java"/>
-  <classpathentry kind="src" path="src/main/resources" excluding="**/*.java"/>
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\ No newline at end of file
diff --git a/webmagic-lucene/.project b/webmagic-lucene/.project
deleted file mode 100644
index 8cd73c3..0000000
--- a/webmagic-lucene/.project
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-lucene</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
-        extraction and persistent. It can simply the development of a specific crawler. NO_M2ECLIPSE_SUPPORT: Project files created with the maven-eclipse-plugin are not supported in M2Eclipse.</comment>
-  <projects>
-    <project>webmagic-extension</project>
-    <project>webmagic-core</project>
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-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
-  </buildSpec>
-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file
diff --git a/webmagic-samples/.classpath b/webmagic-samples/.classpath
deleted file mode 100644
index a641715..0000000
--- a/webmagic-samples/.classpath
+++ /dev/null
@@ -1,37 +0,0 @@
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-<classpath>
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-  <classpathentry kind="var" path="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5.jar" sourcepath="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5-sources.jar"/>
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\ No newline at end of file
diff --git a/webmagic-samples/.project b/webmagic-samples/.project
deleted file mode 100644
index cc31865..0000000
--- a/webmagic-samples/.project
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-samples</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
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-  <projects>
-    <project>webmagic-core</project>
-    <project>webmagic-extension</project>
-  </projects>
-  <buildSpec>
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-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
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-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file
diff --git a/webmagic-saxon/.classpath b/webmagic-saxon/.classpath
deleted file mode 100644
index 60669ae..0000000
--- a/webmagic-saxon/.classpath
+++ /dev/null
@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
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\ No newline at end of file
diff --git a/webmagic-saxon/.project b/webmagic-saxon/.project
deleted file mode 100644
index 716f9c8..0000000
--- a/webmagic-saxon/.project
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-saxon</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
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-  <projects>
-    <project>webmagic-core</project>
-  </projects>
-  <buildSpec>
-    <buildCommand>
-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
-  </buildSpec>
-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file
diff --git a/webmagic-scripts/.classpath b/webmagic-scripts/.classpath
deleted file mode 100644
index ccf3733..0000000
--- a/webmagic-scripts/.classpath
+++ /dev/null
@@ -1,64 +0,0 @@
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\ No newline at end of file
diff --git a/webmagic-scripts/.project b/webmagic-scripts/.project
deleted file mode 100644
index 18da7c6..0000000
--- a/webmagic-scripts/.project
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-scripts</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
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-  <projects>
-    <project>webmagic-core</project>
-    <project>webmagic-extension</project>
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-  <buildSpec>
-    <buildCommand>
-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
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-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file
diff --git a/webmagic-selenium/.classpath b/webmagic-selenium/.classpath
deleted file mode 100644
index 6c41d8c..0000000
--- a/webmagic-selenium/.classpath
+++ /dev/null
@@ -1,62 +0,0 @@
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-<classpath>
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-    </attributes>
-  </classpathentry>
-  <classpathentry kind="var" path="M2_REPO/org/jsoup/jsoup/1.7.2/jsoup-1.7.2.jar" sourcepath="M2_REPO/org/jsoup/jsoup/1.7.2/jsoup-1.7.2-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/assertj/assertj-core/1.5.0/assertj-core-1.5.0.jar" sourcepath="M2_REPO/org/assertj/assertj-core/1.5.0/assertj-core-1.5.0-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-api/1.7.6/slf4j-api-1.7.6.jar" sourcepath="M2_REPO/org/slf4j/slf4j-api/1.7.6/slf4j-api-1.7.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-log4j12/1.7.6/slf4j-log4j12-1.7.6.jar" sourcepath="M2_REPO/org/slf4j/slf4j-log4j12/1.7.6/slf4j-log4j12-1.7.6-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/log4j/log4j/1.2.17/log4j-1.2.17.jar" sourcepath="M2_REPO/log4j/log4j/1.2.17/log4j-1.2.17-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5.jar" sourcepath="M2_REPO/net/sourceforge/htmlcleaner/htmlcleaner/2.5/htmlcleaner-2.5-sources.jar"/>
-  <classpathentry kind="var" path="M2_REPO/org/jdom/jdom2/2.0.4/jdom2-2.0.4.jar"/>
-  <classpathentry kind="var" path="M2_REPO/junit/junit/4.7/junit-4.7.jar" sourcepath="M2_REPO/junit/junit/4.7/junit-4.7-sources.jar"/>
-</classpath>
\ No newline at end of file
diff --git a/webmagic-selenium/.project b/webmagic-selenium/.project
deleted file mode 100644
index 446124e..0000000
--- a/webmagic-selenium/.project
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-  <name>webmagic-selenium</name>
-  <comment>A crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content
-        extraction and persistent. It can simply the development of a specific crawler. NO_M2ECLIPSE_SUPPORT: Project files created with the maven-eclipse-plugin are not supported in M2Eclipse.</comment>
-  <projects>
-    <project>webmagic-core</project>
-  </projects>
-  <buildSpec>
-    <buildCommand>
-      <name>org.eclipse.jdt.core.javabuilder</name>
-    </buildCommand>
-  </buildSpec>
-  <natures>
-    <nature>org.eclipse.jdt.core.javanature</nature>
-  </natures>
-</projectDescription>
\ No newline at end of file