added current implementation of task 2
added Obj.vertices and more verbose error messages upon parsing errors
added Polyhedron.rawScale and Polyhedron raw.Offset
updated the readme
Rewrote the parser:
 - handles all directives needed to complete the task
 - parses smoothing groups (s directive)
 - creates surface normals if not present in the .obj
 - may handle multiple entities per .obj file (o directive)
 - zips normals and vertices as faces for immediate use by the vbo
added angle and color as properties for geometries
uses the new obj parser
added Singleton as decorator
implemented Entity:
 - every entity maintains a geometry (with fitting vbo)
 - implemented model view transformations

implemented Scene:
 - somewhat global OpenGL view
 - maintains entities
 - configurable shading method
 - incorporates static steps of the fixed function pipeline
added argparse
do not track DS_STORE
Merge branch 'master' of https://github.com/dreadworks/college-cg