fix(tooling): make npm scripts windows friendlier
fix(tooling): make npm scripts windows friendlier

Fixes #577

aimeex3/spark-js-sdk,adamweeks/spark-js-sdk,mwegman/spark-js-sdk,aimeex3/spark-js-sdk,mwegman/spark-js-sdk,bbender/spark-js-sdk,ciscospark/spark-js-sdk,ianwremmel/spark-js-sdk,urbenlegend/spark-js-sdk,CiscoHRIT/spark-js-sdk,bbender/spark-js-sdk,urbenlegend/spark-js-sdk,aimeex3/spark-js-sdk,ciscospark/spark-js-sdk,adamweeks/spark-js-sdk,mwegman/spark-js-sdk,ianwremmel/spark-js-sdk,bbender/spark-js-sdk,tran2/spark-js-sdk,CiscoHRIT/spark-js-sdk,tran2/spark-js-sdk,adamweeks/spark-js-sdk