Add background color and make it pretty

A bunch of small changes to make it a bit less ugly, including a background color, link hover colors, a post button, etc.
Change button from .btn-info to .btn-primary

Keeping a super simple color scheme, it's probably better not to use .btn-info and use that weird turquoise.
Merge pull request #10 from christianbundy/make-it-prettier

Make it prettier