Use brew-cask to install apps

[necolas]

At the moment, the apps are just listed, but using brew-cask most of them can be installed automatically.

[iamnewton]

I basically forked all of my repo off of yours and noticed that you weren't doing that, so I updated mine to include that functionality. You can check it out if it helps…

https://github.com/chrisopedia/bash/blob/master/lib/brew

Also check out http://robandlauren.com/2013/11/27/homebrew-brewfile/