Squashed commit of the following:

commit 2d0acf54ef254bd6687092171045da9eaf656502
Author: Nick Jones <darellik@gmail.com>
Date:   Wed Jul 23 08:56:52 2014 -0500

    Add vim-airline as powerline replacement.

commit 92256ff15f73303431dd3bc6da9918a73447ac59
Author: Nick Jones <darellik@gmail.com>
Date:   Wed Jul 23 08:52:21 2014 -0500

    Removing vim-powerline.