Revert "Switch from child_process.spawn to child_process.exec"
Revert "Switch from child_process.spawn to child_process.exec"

This reverts commit 3c496c734b9bd12dc0d96c56189e0243076f5731.

ndonald2/gulp-run,cbarrick/gulp-run,supaket/gulp-run,MrBoolean/gulp-run,nfantone/gulp-run