Adds Environment rotation in dat.gui
Adds Environment rotation in dat.gui

cedricpinson/osgjs,hishamabdelrahman/osgjs,cedricpinson/osgjs,jtorresfabra/osgjs,jtorresfabra/osgjs,jtorresfabra/osgjs,hishamabdelrahman/osgjs,cedricpinson/osgjs,hishamabdelrahman/osgjs