Added Bootstrap, Zocial Glyphs, and Home controller

Highlights of this pull request:

-Added a home controller, with actions of index, about, help. Set root route of application to index. This will allow us to have a central point to build the app off of.
-Added Twitter Bootstrap. Gives us a responsive theme out of the box using the rails-layout and bootstrap-sass gems. Added navigation menu items for home page, and some basic styling. Try reducing the size of your browser.
-Added Zocial Glyphs CSS library: allows for very nicely styled buttons, used soley (for now) on the login buttons. Basically, this saved me a ton of time trying to make these buttons myself. As a result of this, I also added a fonts folder to the asset pipeline, so any fonts we end up using can go in there.