fix appveyor image URL (#23)

README.md

@@ -37,7 +37,7 @@ your ability to test, please do add them here.
 [clim-url]: https://codeclimate.com/github/haraka/haraka-test-fixtures
 [npm-img]: https://nodei.co/npm/haraka-test-fixtures.png
 [npm-url]: https://www.npmjs.com/package/haraka-test-fixtures
-[win-img]: https://ci.appveyor.com/api/projects/status/ynjmw8jy76gt7inh?svg=true
+[win-img]: https://ci.appveyor.com/api/projects/status/mphk1iq8ybxr91s8?svg=true
 [win-url]: https://ci.appveyor.com/project/msimerson/haraka-test-fixtures
 [gk-img]: https://badges.greenkeeper.io/haraka/haraka-test-fixtures.svg
 [gk-url]: https://greenkeeper.io/

appveyor.yml

@@ -1,10 +1,10 @@
 environment:
-  nodejs_version: "4"
+  nodejs_version: "6"
 
 # Install scripts. (runs after repo cloning)
 install:
   # Get the latest stable version of Node.js
-# - ps: Install-Product node $env:nodejs_version
+  - ps: Install-Product node $env:nodejs_version
   - npm install
 
 before_build: