Change makefile
Add new Object and Plane class's
Add findIntersection and getNormalAt methods to plane class
Compose image camera ratio
Define camera ray origin and camera ray direction
Create the sphere findIntersection method
Create winningObjectIndex function into main file
Update the function indexOfWinningObject into main file
Fix a interation that wasn't stop into main file
Change signature some polymorphic methods into classes plane and sphere

Print object color into image
Merge branch 'master' of https://github.com/mmcorrelo/RayTracer