update readme

README-EN.md

@@ -7,7 +7,10 @@ multi-thread context(MTC)
 <a href="https://github.com/alibaba/multi-thread-context/blob/master/README.md">中文文档</a>
 </div>
 
-Transmit multi-thread context, even using thread cached components like thread pool.
+:wrench: Functions
+----------------------------
+
+:point_right: Transmit multi-thread context, even using thread cached components like thread pool.
 
 Class [`java.lang.InheritableThreadLocal`](http://docs.oracle.com/javase/6/docs/api/java/lang/InheritableThreadLocal.html) in `JDK`
 can transmit context to child thread from parent thread.
@@ -23,7 +26,7 @@ If you have problem or question,
 	- Click "Options > Post by email..." to get the email address of this mailing list; 
 	- You can post messages via email or through the forum interface.
 
-Requirements
+:art: Requirements
 ----------------------------
 
 The Requirements listed below is also why I sort out `MTC` in my work. 
@@ -31,7 +34,7 @@ The Requirements listed below is also why I sort out `MTC` in my work.
 * Application container or high layer framework transmit information to low layer sdk.
 * Transmit context to logging without application code aware.
 
-User Guide
+:notebook: User Guide
 =====================================
 
 1. simple usage
@@ -135,6 +138,23 @@ String value = parent.get();
 ### 2.3. Use Java Agent to decorate thread pool implementation class
 
 In this usage, `MtContext` transmission is transparent\(no decoration operation\).
+
+Sample code:
+
+```java
+ExecutorService executorService = Executors.newFixedThreadPool(3);
+
+Runnable task = new Task("1");
+Callable call = new Call("2");
+executorService.submit(task);
+executorService.submit(call);
+
+// =====================================================
+
+// Task或是Call中可以读取, 值是"value-set-in-parent"
+String value = parent.get();
+```
+
 See demo [`AgentDemo.java`](https://github.com/alibaba/multi-thread-context/blob/master/src/test/java/com/alibaba/mtc/threadpool/agent/AgentDemo.java).
 
 Agent decorate 2 thread pool implementation classes
@@ -143,7 +163,7 @@ Agent decorate 2 thread pool implementation classes
 - `java.util.concurrent.ThreadPoolExecutor`
 - `java.util.concurrent.ScheduledThreadPoolExecutor`
 
-Add start argumetns on Java: 
+Add start options on Java command: 
 
 - `-Xbootclasspath/a:/path/to/multithread.context-x.y.z.jar:/path/to/javassist-3.12.1.GA.jar`
 - `-javaagent:/path/to/multithread.context-x.y.z.jar`
@@ -165,12 +185,12 @@ java -Xbootclasspath/a:dependency/javassist-3.12.1.GA.jar:multithread.context-1.
 Run the script [`run-agent-demo.sh`](https://github.com/alibaba/multi-thread-context/blob/master/run-agent-demo.sh)
 to start demo of "Use Java Agent to decorate thread pool implementation class".
 
-Java API Docs
+:electric_plug: Java API Docs
 ======================
 
 The current version Java API documentation: <http://alibaba.github.io/multi-thread-context/apidocs/>
 
-Maven dependency
+:cookie: Maven dependency
 =====================================
 
 ```xml
@@ -183,11 +203,24 @@ Maven dependency
 
 Check available version at [search.maven.org](http://search.maven.org/#search%7Cga%7C1%7Ca%3A%22multithread.context%22%20g%3A%22com.alibaba%22).
 
-Related resources
+:books: Related resources
 =====================================
 
+Jdk core classes
+----------------------------
+
+* [WeakHashMap](http://docs.oracle.com/javase/7/docs/api/java/util/WeakHashMap.html)
+* [InheritableThreadLocal](http://docs.oracle.com/javase/7/docs/api/java/lang/InheritableThreadLocal.html)
+
+Java Agent
+----------------------------
+
 * [Java Agent规范](http://docs.oracle.com/javase/6/docs/api/java/lang/instrument/package-summary.html)
 * [Java SE 6 新特性: Instrumentation 新功能](http://www.ibm.com/developerworks/cn/java/j-lo-jse61/)
 * [Creation, dynamic loading and instrumentation with javaagents](http://dhruba.name/2010/02/07/creation-dynamic-loading-and-instrumentation-with-javaagents/)
 * [JavaAgent加载机制分析](http://alipaymiddleware.com/jvm/javaagent%E5%8A%A0%E8%BD%BD%E6%9C%BA%E5%88%B6%E5%88%86%E6%9E%90/)
+
+Javassist
+----------------------------
+
 * [Getting Started with Javassist](http://www.csg.ci.i.u-tokyo.ac.jp/~chiba/javassist/tutorial/tutorial.html)