DO NOT MERGE YET: Demo site V2

Looking for team feedback (copy, angular.js optimization) for the V2 style guide demo site. (rackerlabs.github.io/encore-ui/)

Going to continue submitting commits, especially those marked FIXME.
I think that

"adding a **.columns** class to the .pure-g container will give padding of 1.5ems per each individual cell, or 3ems together."

is clearer -- any class you refer to in text areas like this should get the same "." and `<code>` treatment.