Add gem version, dependency status, and code quality badges to the readme
Merge pull request #77 from thenickperson/readme-badges

Add gem version, dependency status, and code quality badges to the readme
Added libnotify Gem on *nix systems in case people want to use it for
Guard notifications.
Merge branch 'master' of github.com:technicalpickles/homesick
Updated README for .homesickrc.