add .coffee extension to browserify extensions
add .coffee extension to browserify extensions

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