Fix effects in OSX project. Add CCEffectHue.

- Replaces CCEffectGlow with CCEffectBloom.
- Updates image paths in the bloom test to work on OSX.
- Adds CCEffectHue and a test for it. The hue adjustments are specified in degrees ranging from -180 to 180.
Neat. I'll work up a pure matrix math version of this and see how the two compare on a device. 

One question: when you say you rotated around (1,1,1) I assume that's in RGB space? Looking at the RGB color cube I can see how that would be roughly equivalent to hue rotation in HSV.