CCEffectsTest - Remove the pre-lighting from the shiny torus image
CCEffectsTest - Simple point lighting test
CCEffectsTest - Add directional light support to the simple lighting test
CCEffectsTest - Add lighting parameter test

Tests manipulation of various light parameters including primary and ambient colors,
primary and ambient intensities, cutoff, and depth.
CCEffectLighting - First pass at specular highlights

It works but there are a few things missing:
1) Highlights are always enabled.
2) There is no shininess control (i.e. no way to change the specular exponent).
3) There is no specular material color (it's always assumed to be white).
CCEffectLighting - Specular lighting additions

Address the issues with specular mentioned in my previous commit. Properties have been
added for controlling the shininess and specular color. Setting shininess to zero or specular
color to black disables the specular calculations in the shader.
CCEffectsTest - Add varying shininess case to the light parameter test
CCEffectLighting - Actually update the Xcode project with the lighting files