added gulp testing commands to the readme
added gulp testing commands to the readme

BI/acumen-gsa-agile-prototype,AcumenSolutions/acumen-gsa-agile-prototype,AcumenSolutions/acumen-gsa-agile-prototype,gsasnapshot/acumen-gsa-agile-prototype,BI/acumen-gsa-agile-prototype,gsasnapshot/acumen-gsa-agile-prototype