chore(package) update gulp-rev to 6.0.0
chore(package) update gulp-rev to 6.0.0

felquis/vanilla-es6-jspm,topheman/vanilla-es6-jspm,Andersos/vanilla-es6-jspm,felquis/vanilla-es6-jspm,Andersos/vanilla-es6-jspm,Andersos/vanilla-es6-jspm,felquis/vanilla-es6-jspm,topheman/vanilla-es6-jspm,topheman/vanilla-es6-jspm