npm install -g gulp
npm install
To auto-recompile scss and coffee, livereload browser and start local static:
gulp
And after you should be able to access your project at:
http://localhost:3000
http://mdn.github.io/voice-change-o-matic/ https://github.com/mdn/voice-change-o-matic/blob/gh-pages/scripts/app.js#L128-L205