* Use object's distance to attenuate lighting effects
* Attempt to use multiple light sources
* Added distance attenuation
* Added ability to have multiple light sources
* Changed shaders such that light intensity is inversely proportional to attenuation
Merge branch 'StarFaux/Faulty-lighting'

Conflicts:
	StarFaux/StarFaux/ExternalModel.cpp
	StarFaux/StarFaux/main.cpp

* Fixed merge conflicts
* Use multiple light sources to illuminate the ship when collision is detected