Powercraze 0.2

- Powerups added!
          - You can only pickup powerups threw the disk (Last one to touch it gets the powerup)
          - Powerups are categorized by: Good, Neutral and Bad
          - Here are some powerups:
                       - SizeUp: Increases the players size (Good)
                       - SizeDown: Decreases the players size (Bad)

- Spawner added (It spawns random powerups on the map, at a random position, in a certain interval (Could be random time).