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.
Since "Encore Specific" is used kind of like a tag throughout the docs, I'd italicize or bold that text each time it's used so it's more easily distinguished from other text.