Emacs - change qw key chord mapping

I don't use Projectile much, so the more verbose key combo is fine. I
use mc/edit-lines frequently.
Emacs - Enable global flycheck mode

Flycheck provides nice real time lint notifications
Emacs - add popup to Cask

I did not install this explicitly. I am assuming this was a package
dependency.
Bash - add vagrant aliases

Shorter versions of vagrant commands I use a bunch of times a day.