Merge pull request #3 from bradmontgomery/master

Added a .gitignore
Updated to add a page for companies. Minor changes to footer and copy.

Added a /companies page that speaks directly to potential company
sponsors.
Noticed that "companies" should have been "sponsors" so I changed it.
Added a thank you page with a better "tweet this" call to action
Merge pull request #6 from cliftonmckinney/master

Added a "sponsors" page, updated other pages to reflect the change. Updated footer to include "brought to you by Work for Pie"