Update README.md

Author: luugiathuy

README.md

@@ -3,4 +3,14 @@ Web Proxy by Python
 
 A simple web proxy written in Python
 
-More details can find on my blog: http://luugiathuy.com/2011/03/simple-web-proxy-python/
+##Usage
+run
+```
+python proxy.py 9876 
+```
+where 9876 is the port number of the proxy.
+
+More details on my blog: http://luugiathuy.com/2011/03/simple-web-proxy-python/
+
+##Contact
+[@luugiathuy](http://twitter.com/luugiathuy)