Update README.md

README.md

@@ -1,11 +1,32 @@
 # NettyRpc
-An RPC framework based on Netty, ZooKeeper and Spring
-
+An RPC framework based on Netty, ZooKeeper and Spring  
 中文详情：[Chinese Details](http://www.cnblogs.com/luxiaoxun/p/5272384.html)
-
 ### NettyRpc-1.0
-1) RPC Client send request with short connection by netty.
-
+1) RPC Client send request with short connection by netty.  
 2) RPC Client will wait until it gets response.
+#### How to use
+1. Define an interface:
+    	public interface HelloService { 
+			String hello(String name); 
+			String hello(Person person);
+		}
+2. Implement the interface with annotation @RpcService:
+		@RpcService(HelloService.class)
+		public class HelloServiceImpl implements HelloService {
+			@Override
+			public String hello(String name) {
+				return "Hello! " + name;
+			}
 
-
+			@Override
+			public String hello(Person person) {
+				return "Hello! " + person.getFirstName() + " " + person.getLastName();
+			}
+		}
+3. Run the server with zookeeper
+		RpcBootstrap
+4. Run the client:
+		ServiceDiscovery serviceDiscovery = new ServiceDiscovery("127.0.0.1:2181");
+		final RpcClient rpcClient = new RpcClient(serviceDiscovery);
+		HelloService helloService = rpcClient.create(HelloService.class);
+		String result = helloService.hello("World");