Renderer factory API: rename "getRenderer" to "createRenderer", add "disposeRenderer"
Renderer factory API: rename "getRenderer" to "createRenderer", add "disposeRenderer"

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