Added shell script to build command line version of raytracer. Also added a script to generate QT project files
and build a Qt version of the project.
Added canvas widget which displays an instance of Image and started work
on some additional thread code for performing the raytracer
Got single rendering pass with up-to-date updating of interface working
Created resource manager for textures, images and meshes
Actually remembered to add ResourceManager source files to the repository
Introduced ResouceManager to application