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
Good point on the h4 versus h1 because the class seems to override the default differences.  I'm using a class on the headers to include some additional styling for the head (e.g., background color, alignment, etc.).  Clearly I need to get on my horse and learn more html and css.