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.
Yes, RGB(1,1,1). It works okay if you don't care about preserving luminance. It's very simple if luminance is not important anyway.