Final changes for prototype 1 - will work more in lab. NOTE: You can play with gravity by going to GameManager.js and messing with the gravity coefficient. I have it at 0 now. A good value for the moon is about .1, and for earth (which makes it very difficult) is .3.

As for the mechanics right now, I like the speeds for everything. Challenge mode of course needs to implement some sort of acceleration, which we can mess with later.
Merge branch 'master' of https://github.com/njchristian/Multiplayer-Game