diff --git a/README.md b/README.md
index 8724e890..e92a4405 100644
--- a/README.md
+++ b/README.md
@@ -29,11 +29,9 @@ webmagic的功能覆盖整个爬虫的生命周期(链接提取、页面下载
 
 ###Get Started
 	
-webmagic定制的核心是PageProcessor接口。一个最简单的webmagic爬虫例子是这样的：
-
-	Spider.me().processor(new SimplePageProcessor("http://my.oschina.net/", "http://my.oschina.net/*/blog/*")).run();
+webmagic定制的核心是PageProcessor接口。
 	
-其中SimplePageProcessor实现如下：
+例如，我们要实现一个简单的通用爬虫SimplePageProcessor，代码如下：
 
     public class SimplePageProcessor implements PageProcessor {
 
@@ -53,16 +51,25 @@ webmagic定制的核心是PageProcessor接口。一个最简单的webmagic爬虫
         @Override
         public void process(Page page) {
             List<String> requests = page.getHtml().as().rs(urlPattern).toStrings();
+            //调用page.addTargetRequests()方法添加待抓取链接
             page.addTargetRequests(requests);
+            //xpath方式抽取
             page.putField("title", page.getHtml().x("//title"));
+            //sc表示使用Readability技术抽取正文
             page.putField("content", page.getHtml().sc());
         }
 
         @Override
         public Site getSite() {
+            //定义抽取站点的相关参数
             return site;
         }
     }
+        
+调用这个爬虫的代码如下：
+
+	Spider.me().processor(new SimplePageProcessor("http://my.oschina.net/", "http://my.oschina.net/*/blog/*")).run();
+
 
 ### 示例
 
diff --git a/pom.xml b/pom.xml
index 3772cd01..68927f20 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <groupId>us.codecraft</groupId>
     <version>0.0.1-SNAPSHOT</version>
     <modelVersion>4.0.0</modelVersion>
-
+    <packaging>pom</packaging>
     <artifactId>webmagic</artifactId>
 
     <modules>  
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/processor/SimplePageProcessor.java b/webmagic-core/src/main/java/us/codecraft/webmagic/processor/SimplePageProcessor.java
index a8165bb4..eb8f56ea 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/processor/SimplePageProcessor.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/processor/SimplePageProcessor.java
@@ -29,13 +29,17 @@ public class SimplePageProcessor implements PageProcessor {
     @Override
     public void process(Page page) {
         List<String> requests = page.getHtml().as().rs(urlPattern).toStrings();
+        //调用page.addTargetRequests()方法添加待抓取链接
         page.addTargetRequests(requests);
+        //xpath方式抽取
         page.putField("title", page.getHtml().x("//title"));
+        //sc表示使用Readability技术抽取正文
         page.putField("content", page.getHtml().sc());
     }
 
     @Override
     public Site getSite() {
+        //定义抽取站点的相关参数
         return site;
     }
 }