Added Level 3 and 4, A main menu. Ambient sound. Grass and trees

Added Level 3 Falling thru loops, However, there is a lot of problem with that. Since I still don't know how to make a game over while a player touches an object.

 Level 4 Is still in production. You can't win and it's halfway done. There is Ambient sounds really good.

 A main menu which took me 2 hours to make. Somehow I did something bad. But fixed it at the end so that's good.

Grass and trees. For an upcoming level.