Adds basic styling to app and lays groundwork for future styling

* Uses bourbon, neat, and bitters (though suspenders set up)
* Basic styling for buttons, titles, forms, and lists
Thanks Hayley.  It looks like this body class language is included by the Flutie gem that is installed when you use suspenders.  Flutie seems to allow you to create controller specific styling: https://github.com/thoughtbot/flutie