add version check (#130)
add version check (#130)

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