Cleanups to the vertex structs example.
Cleanups to the vertex structs example.

iskiselev/JSIL,FUSEEProjectTeam/JSIL,sq/JSIL,sander-git/JSIL,dmirmilshteyn/JSIL,sq/JSIL,volkd/JSIL,Trattpingvin/JSIL,acourtney2015/JSIL,mispy/JSIL,Trattpingvin/JSIL,x335/JSIL,acourtney2015/JSIL,hach-que/JSIL,iskiselev/JSIL,sq/JSIL,antiufo/JSIL,FUSEEProjectTeam/JSIL,iskiselev/JSIL,Trattpingvin/JSIL,antiufo/JSIL,TukekeSoft/JSIL,hach-que/JSIL,Trattpingvin/JSIL,antiufo/JSIL,antiufo/JSIL,TukekeSoft/JSIL,x335/JSIL,hach-que/JSIL,volkd/JSIL,sander-git/JSIL,hach-que/JSIL,mispy/JSIL,mispy/JSIL,mispy/JSIL,sander-git/JSIL,FUSEEProjectTeam/JSIL,iskiselev/JSIL,sq/JSIL,acourtney2015/JSIL,TukekeSoft/JSIL,dmirmilshteyn/JSIL,x335/JSIL,acourtney2015/JSIL,hach-que/JSIL,sq/JSIL,dmirmilshteyn/JSIL,x335/JSIL,dmirmilshteyn/JSIL,TukekeSoft/JSIL,volkd/JSIL,FUSEEProjectTeam/JSIL,iskiselev/JSIL,sander-git/JSIL,volkd/JSIL,volkd/JSIL,sander-git/JSIL,acourtney2015/JSIL,FUSEEProjectTeam/JSIL