Merge pull request TypeStrong#121 from johnnyreilly/master

Update README.md

Author: jbrantly

README.md

@@ -1,4 +1,5 @@
 [![Build Status](https://travis-ci.org/TypeStrong/ts-loader.svg?branch=master)](https://travis-ci.org/TypeStrong/ts-loader)
+[![Build Status](https://ci.appveyor.com/api/projects/status/github/jbrantly/ts-loader?svg=true)](https://ci.appveyor.com/project/jbrantly/ts-loader)
 [![Downloads](http://img.shields.io/npm/dm/ts-loader.svg)](https://npmjs.org/package/ts-loader)
 [![Join the chat at https://gitter.im/TypeStrong/ts-loader](https://img.shields.io/badge/gitter-join%20chat-brightgreen.svg)](https://gitter.im/TypeStrong/ts-loader)
 
@@ -168,4 +169,4 @@ Please see the [contributer's guide](CONTRIBUTING.md).
 
 ## License
 
-MIT License
+MIT License