- There is now a 3, 2, 1 countdown before the game begins.

- Modified _transitionListener() to use same start / stop logic for each module.

- _transitionListener() now places the destination module's layer below all other layers

- Introduce settings.debug and related console logging
Remove highScores from settings
- Alter countDown and counter colors; add shadows
Merge pull request #3 from mjhasbach/countDown

Merge countDown