Adding in Physics puzzle

Today I have done some clean up of the game to make a more stable polished prototype build of the game, the first thing I achieved in doing so was finalizing the seesaw puzzle mechanic. In this I now have built a physics based seesaw that is locked to a single axis. The advantage of using the physics system rather than a animation based system is that the physics system has a much more responsive feel making the gameplay easier to understand makes the interaction more fun. Where as a animation system is to simplistic and sometime can react unpredictably.