Remove Stove, use Berkshelf ~> 3.1
Add Gemfile.lock to deal w/ RubyGems 2.2.2 bug

Add the Gemfile.lock to deal with a prerelease dependency resolution
bug introduced in RubyGems 2.2.2. This can be reverted when RubyGems
drops its next release.
Specify particular, known-good ref of chef-solo-search from Github
Tweak RuboCop config to not complain about metadata.rb etc.
Remove Vagrantfile, Test Kitchen all the way!
Update to RuboCop ~> 0.23 & fix Rakefile to go with name change