Minor tweaks.
FPS count and Lighting optimisation.
JWF: Breadth first distance implimented. SLOW...
JWF: Optimized breadth first distance search.
JWF: 1st ray trace
JWF: Some raytracing going. Some misses.
Merge branch 'master' of https://github.com/BackgroundNose/SmashGrab
JWF: Stencil light only on essential 2 edges.
JWF: Switched to RAF timing. Particle start.