Update README.md

Author: daymade

README.md

@@ -1,4 +1,7 @@
-[![Build Status](https://travis-ci.org/tsongknows/WeChatBot.Net.svg?branch=master)](https://travis-ci.org/tsongknows/WeChatBot.Net)
+Mono: [![Build Status](https://travis-ci.org/tsongknows/WeChatBot.Net.svg?branch=master)](https://travis-ci.org/tsongknows/WeChatBot.Net)
+
+Appveyor: [![Build status](https://ci.appveyor.com/api/projects/status/6y6xy61j7ig2pj0i/branch/master?svg=true)](https://ci.appveyor.com/project/tsongknows/wechatbot-net/branch/master)
+[![Test status](http://teststatusbadge.azurewebsites.net/api/status/tsongknows/wechatbot-net)](https://ci.appveyor.com/project/tsongknows/wechatbot-net/branch/master)
 
 # WeChatBot.Net