fixed typo
Merge pull request #38 from fruux/master

just a typo
Added a homepage link to getbootstrap.com

makes sense, no?
Currently, there is no link in the Expo to the main Bootstrap website. 
Add RSS Feed
Merge pull request #87 from retlehs/add_rss_feed

Add RSS Feed
Add rss feed link to footer, tighten up header and footer styles on mobile given new link