Remove simplecov
Move Aruba InProcess
Ensure we always use the tmp_dir for Berkshelf in testing
Optimize Chef Server calls

We can reset Chef Zero's data on each scenario, instead of making multiple HTTP requests to the server to delete cookbooks.
Remove legacy testing files from out of process testing
Move dependencies where they go
Remove sample knife.rb (it is no longer needed)
Apparently we can't require that there
Speed up and unify git config
Move Main into it's own class. Refactor formatter to use a #mute block
Fix spacing on environment_steps
Move guard gems into their own group to ignore installation on Travis
Run cane on Travis
rename Berkshelf::Main to Berkshelf::Cli::Runner
bump test-kitchen dev dependency
Merge pull request #504 from RiotGames/faster_aruba

Speed up aruba