增加贡献者OlingCat

Author: astaxie

README.md

@@ -25,6 +25,7 @@
  - [四月份平民](https://plus.google.com/110445767383269817959) (review代码)
  - [Hong Ruiqi](https://github.com/hongruiqi)  (review代码)
  - [BianJiang](https://github.com/border) (编写go开发工具Vim和Emacs的设置)
+ - [OlingCat](https://github.com/OlingCat)(review代码)
 
 ##开始阅读
 [开始阅读](https://github.com/astaxie/build-web-application-with-golang/blob/master/preface.md)