Add --help switch to benchmark.js
Add --help switch to benchmark.js

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