Project files cleanup

Hello there, I spend a lot of time thinking about search for dependency managers ( http://cocoapods.org ) and so was debating about making some changes to the search presentation on caskroom.io but first thought I'd give the project a bit of a cleanup. 

This moves the css/js/assets into their own folders and adds a README. 

When I ran the site locally from HEAD I didn't see the custom font ( presume this is due to typekit, which I've never used. ) and I still don't see it when I run it with my changes, so please double check that this won't break that.