Update README.md

Author: usecodelee

README.md

@@ -1,4 +1,17 @@
-# present
-present 轻量级密码 C#实现<br>
-An Ultra-Lightweight Block Cipher  C#
-![](https://github.com/usecodelee/img/title.png) 
+present
+==
+present 轻量级密码 C#实现
+
+An `Ultra-Lightweight` Block Cipher `C#`<br>
+
+[My blog](http://blog.csdn.net/caomage "Welcome to visit")  
+
+<div align=center><img width="500" height="500" src="https://github.com/usecodelee/present/raw/master/img/title.png"/></div>
+
+This is the interface I made：<br>
+____
+<div align=center><img width="500" height="500" src="https://github.com/usecodelee/present/raw/master/img/begin.png"/></div>
+
+This is the result：<br>
+____
+<div align=center><img width="500" height="500" src="https://github.com/usecodelee/present/raw/master/img/result.png"/></div>