Vector2, Vector3 and Rectangle ToString
Vector2, Vector3 and Rectangle ToString

Added missing ToString method for Vector2, Vector3 and Rectangle, so
they behave like their XNA counterparts

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