@starsirius  => More documentation.

* Prettified text on homepage.
* Documented expiring OAuth tokens.
* Added support for warning/error/success markup in .md docs.

![screenshot 2014-09-04 15 19 27](https://cloud.githubusercontent.com/assets/542335/4155229/6e8a7eb0-3468-11e4-8477-77de33e7bc93.png)

* Expanded applications API.
* Documented artists.
* Fixed a bug with page caching that needs to be user-specific since it has user tokens.
Oh. Actually caused by the `}` at the end here.