Enable Windows builds on AppVeyor

Author: damieng

README.md

@@ -1,9 +1,9 @@
-# Git Diff package [![Build Status](https://travis-ci.org/atom/git-diff.svg?branch=master)](https://travis-ci.org/atom/git-diff)
+# Git Diff package
+[![OS X Build Status](https://travis-ci.org/atom/git-diff.svg?branch=master)](https://travis-ci.org/atom/git-diff) [![Windows Build Status](https://ci.appveyor.com/api/projects/status/9auj52cs0vso66nv/branch/master?svg=true)](https://ci.appveyor.com/project/Atom/git-diff/branch/master) [![Dependency Status](https://david-dm.org/atom/git-diff.svg)](https://david-dm.org/atom/git-diff)
 
-Marks lines in the editor gutter that have been added, edited, or deleted since
-the last commit.
+Marks lines in the editor gutter that have been added, edited, or deleted since the last commit.
 
-  * `alt-g up` to move the cursor to the previous diff in the editor
-  * `alt-g down` to move the cursor to the next diff in the editor
+  * <kbd>alt-g up</kbd> to move the cursor to the previous diff in the editor
+  * <kbd>alt-g down</kbd> to move the cursor to the next diff in the editor
 
 ![](https://f.cloud.github.com/assets/671378/2241519/04791a24-9cd6-11e3-9a12-164cabe81d58.png)

appveyor.yml

@@ -0,0 +1,17 @@
+version: "{build}"
+
+os: Windows Server 2012 R2
+
+install:
+  - choco install atom -y
+  - cd %APPVEYOR_BUILD_FOLDER%
+  - "%LOCALAPPDATA%/atom/bin/apm clean"
+  - "%LOCALAPPDATA%/atom/bin/apm install"
+
+build_script:
+  - cd %APPVEYOR_BUILD_FOLDER%
+  - "%LOCALAPPDATA%/atom/bin/apm test --path %LOCALAPPDATA%/atom/bin/atom.cmd"
+
+test: off
+
+deploy: off