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.
It's a play on what we see in the billing-ui sections. The only downside is that in line 27 I added an inline style to make a left border. But I totally don't see what that couldn't be a thing.