updated README.md
updated README.md

stiXits/demo_ray,lanice/cg2sandbox,stiXits/demo_lod,stephde/CG2Uebung,stiXits/demo_lod,stiXits/demo_ter,lanice/cg2sandbox,stiXits/demo_ter,hpicgs/cg2sandbox,stiXits/demo_ter,stiXits/demo_ray,stiXits/demo_lod,stephde/CG2Uebung,stiXits/demo_ray,lanice/cg2sandbox,hpicgs/cg2sandbox,stephde/CG2Uebung