Adding starter Appveyor config

Signed-off-by: Stuart Preston <stuart@chef.io>

appveyor.yml

@@ -0,0 +1,31 @@
+version: "master-{build}"
+
+os: Visual Studio 2017
+platform:
+ - x64
+
+environment:
+ matrix:
+ - ruby_version: "25-x64"
+
+clone_folder: c:\projects\mixlib-archive
+clone_depth: 1
+skip_tags: true
+branches:
+ only:
+ - master
+
+install:
+ - SET PATH=C:\Ruby%ruby_version%\bin;%PATH%
+ - echo %PATH%
+ - ruby --version
+ - gem --version
+ - gem update --system
+ - gem install bundler --quiet --no-ri --no-rdoc
+ - bundler --version
+
+build_script:
+ - bundle install
+
+test_script:
+ - bundle exec rake