Merge pull request #903 from thayerandrews/develop

CCEffects - API cleanup, test cleanup, bug fixes
CCEffect - API documentation
CCEffectStack - API documentation
CCEffectBrightness - API documentation
CCEffectContrast - API documentation
CCEffectGlass - API documentation
CCEffectHue - API documentation
CCEffectPixellate - API documentation
CCEffectGlass - API docs update
CCEffectReflection - API documentation
CCEffectRefraction - API documentation
CCEffects - Documentation fixes
CCEffectSaturation - API documentation
CCEffectBloom - API documentation
CCEffectGaussianBlur - API documentation
CCEffectNode - API documentation
Merge remote-tracking branch 'upstream/develop' into develop