Set up globals needed for ray tracing and added scene objects to
constructor in TKRayTraceScene
Updated constructor, implemented render()
Fixed location of objects
Merge branch 'master' of ssh://oconnolk@cslab1.bc.edu/home/ameswi/cs333git/TeamK
Implemented rayTraceScene(), look(), and reflectedRay() functions.
Got to a point of well-functioning reflections.
Added checker material (not working properly)
Merge branch 'master' of ssh://oconnolk@cslab1.bc.edu/home/ameswi/cs333git/TeamK
Fixed a bug that wrong lowerBoundT is passed into the look function