Add support for homebrew cask

http://caskroom.io
Merge pull request #50 from thegcat/cask

Support for Homebrew Casks
Add HomebrewCask to README
Merge pull request #51 from thegcat/patch-1

Add HomebrewCask to README
Introduce code style guidelines with Hound :dog:
Welcome the new contributor @thegcat
Add the overview table to the README
Adjust Gemspec and Dependencies
Merge pull request #52 from moonglum/update-all-the-things

Update some outdated things
First shot at using Megingiard for output