update readme

README.md

@@ -9,6 +9,15 @@
 
 ![qq-group](https://raw.githubusercontent.com/NaBian/HandyControl/master/Resources/qq-group.png)
 
+## 捐赠
+如果您觉得HandyControl还不错，那么就以HandyControl的名义，花一顿饭的钱来为慈善事业做一份贡献吧（捐赠留言写：HandyControl），谢谢大家。  
+
+捐赠链接：
+![中华慈善总会](http://www.chinacharityfederation.org/ConfirmDonation/0.html?zhijie=3)  
+
+也可以扫下面的二维码：  
+![中华慈善总会](https://raw.githubusercontent.com/NaBian/HandyControl/master/Resources/chinacharityfederation.png)  
+
 ## Usage
 
 Step 1：Add a reference to HandyControl or search for HandyControl on the nuget;