Simplify and comment the demo on collision triangle meshes
Simplify and comment the demo on collision triangle meshes

Milad-Rakhsha/chrono,projectchrono/chrono,Milad-Rakhsha/chrono,rserban/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,dariomangoni/chrono,rserban/chrono,armanpazouki/chrono,rserban/chrono,armanpazouki/chrono,armanpazouki/chrono,dariomangoni/chrono,projectchrono/chrono,rserban/chrono,projectchrono/chrono,armanpazouki/chrono,projectchrono/chrono,rserban/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,projectchrono/chrono,rserban/chrono,armanpazouki/chrono,projectchrono/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,armanpazouki/chrono,rserban/chrono,dariomangoni/chrono