Adds note about urlTemplate and configuration whitelist
Adds note about urlTemplate and configuration whitelist

CartoDB/Windshaft,HydroLogic/Windshaft,wsw0108/Windshaft,wsw0108/Windshaft,manueltimita/Windshaft,HydroLogic/Windshaft,wsw0108/Windshaft,manueltimita/Windshaft,CartoDB/Windshaft,CartoDB/Windshaft,manueltimita/Windshaft,HydroLogic/Windshaft