Pebble Run - Minor Update 1

This is the official 1.0 of Pebble Run. Odds are it will not get many more updates. Maybe one or two if we're feeling up to adding some content. 

Shifting from the previous 0.8 release to the 1.0, we discovered some of our audio wasn't linked properly so some of the effects weren't activating.

Audio:
- Menu selection audio blip now happens
- Game Over chime happens
- When Game Over chime is triggered, level audio is diminished
- Player ump sfx added
- All audio rebalanced