GitHub push 4/5/14

[Additions]
- Removed Video Freak font. Found out that the font was illegal to use
without permission.
- Added Batman Forever font to project, NGUI imported Bitmap text.
- Added some new sounds such as invalid power up use
- Fixed several issues that were a result of changing to NGUI such as
camera orientation
- Added kill functions to game obstacles so that they can be stopped at
any moment in the game such as the end game scene.
- Added new artwork for several power ups
- Added new artwork to obstacle signs
- Added several power ups to the game such as swipe to remove nodes,
slow down row time, double points, and cancel obstacle.