Buttons are now objects
Rename data-id to data-self
Assign ids for top two levels
Continue if query string is invalid
Use ids for top two levels
Assign third-level ids
Use ids for third level
Assign ids to Fly screen
Allow getUrl to take an optional param
Add HeartGold example back in

Set default State.state.game because Load.example runs before State.setAll
Merge pull request #33 from hftf/ids

Fixes #29