Add argument for toggling source maps for SFX build
Add argument for toggling source maps for SFX build

matthewbauer/builder,Psvensso/builder,whitneyit/builder,richardTowers/builder,jrauschenbusch/builder,Munter/builder,systemjs/builder,robwormald/builder,systemjs/builder,ahmedshuhel/builder,buddhike/builder,JeroenVinke/builder,systemjs/builder,tonytanger/builder,robwormald/builder,lookfirst/builder,matthewbauer/builder,synaptek/builder,alexandr2110pro/builder,alexisvincent/builder,jrauschenbusch/builder,ahmedshuhel/builder,richardTowers/builder,alexisvincent/builder,tonytanger/builder,douglasduteil/builder,buddhike/builder,alexisvincent/builder,jrauschenbusch/builder,douglasduteil/builder,lookfirst/builder,JeroenVinke/builder,alexandr2110pro/builder,synaptek/builder,whitneyit/builder,Psvensso/builder,Munter/builder