Effects and Mechanics Update

This update is a smaller patch that includes changes to the behavior of the game speed. In addition, the enemies talked about in the games descriptions will now start spawning from the very beginning instead of at 2000+ points.

There will be Speed up messages now with a gradual speed up of about 50%. Before it would just gradually speed up the further the game moves along.

Other changes:
- Controls now displayed on menu
- speed of game now controlled by single object instead of every object by itself
- Added graphical effects for bat killed, jumping and dashing
- Added bat killing sounds