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.
So, this one is tough because it requires an angular.js controller and a JS object variable to appear property rather than just mark-up.This may be something where Jay will have to either add some additional code OR we tell folks that the directive won't work by design.