- Added color import for .ply format.
 - Replaced 9 shaders plus changed key bindings to:
 		1 - diffuse green colors
		2 - diffuse with red to green as height relative to miny and maxy of
vertices
		3 - just diffuse
		4 - diffuse + env
		5 - diffuse + env!
		6 - diffuse + env  + spec
		7 - diffuse + env  + spec!
		8 - diffuse + env  + spec  + shinny
		9 - diffuse + env  + spec! + shinny
		0 - triangles vs lines
Added shader 8 files.