Augmented Reality: Images, metadata, tests, and more.

![iron man hud](http://jayse.tv/v2/wp-content/uploads/2012/05/mkVII_HUD_leviathan_jayse_hansen.png)

This PR implements some cool new new for elemica-suggest, including:

* The ability to support images (closes #1)
* The ability to support metadata (closes #2)
* Updated README. (closes #3)
* Specs via npm!

Show me some love @elemica/interface!