Mconti material overhaul v2
Hey everyone, so I totally redid this. All materials are now CC0 with sources for textures in the read me. All materials are set up in the OSPRay 2.0 format. The metals are the main attraction here but there are some really cool PBR ones as well.
I have moved all the textures into a subfolder to keep things a bit cleaner. Most of the textures are scaled down to make sure nothing is too large, but if the file size is a problem let me know and I can scale things down even more.
I made this commit in the Web IDE so if something is messed up please let me know.