Test with two materials and objects
Use lighting in example
Note unimplemented
Clean up/clarify

Remove unused method parameter.
Demote material class attributes to object attributes; there is no
reason to keep them accessible outside an object.
Add ambient lighting for example

Otherwise the "dark" half of the mesh is invisible.
Add material setters
Add more unit tests

Test setters, test parser results.
Fix license references to pyglet
Release 0.1.1