update gulp to 3.6
update gulp to 3.6

xmeta/gulp-scaffold,rikukissa/webpack-project-template,rikukissa/bacon-flux-react,leonidas/gulp-project-template,rikukissa/chat-client,cheapsteak/gulp-project-template,cheapsteak/npmcharts.com,rikukissa/separated-browserify-bundles,Takushi-U/vue-practice,keenjoe007/gulp-scaffold-template,rikukissa/ideas,rikukissa/react-bacon-chat,Pinqvin/gulp-project-template,rikukissa/ideas,rikukissa/chat-client,rikukissa/webpack-project-template,rikukissa/react-bacon-chat,rikukissa/leaflet-geohash-base,leonidas/gulp-project-template,xmeta/gulp-scaffold,cheapsteak/npmcharts.com,keenjoe007/gulp-scaffold-template,rikukissa/bacon-flux-react,xmeta/gulp-scaffold,cheapsteak/demo-react-transitiongroup,koodiklinikka/koodiklinikka.fi,Pinqvin/gulp-project-template,cheapsteak/demo-react-transitiongroup,cheapsteak/gulp-project-template,koodiklinikka/koodiklinikka.fi,Takushi-U/vue-practice