So you want to run this thing? We use Grunt (http://gruntjs.com/) for build steps, so you need to:

• install NodeJS
• install Grunt using the command npm install -g grunt-cli
• run grunt server in the top-level directory of the app to test out on a local server.

This should automatically load the page in your browser. Instead of running grunt server, you can also try:

• running grunt build in the top-level directory of the app.
• run the Google AppEngine Launcher in the dist/ directory that was created by the grunt build command
• open the page in your browser on localhost

You get the following with Grunt

• Live Reload, changes saved to your project will automatically reload the browser page if you're running grunt server.
• Auto-Prefixing (i.e. display: flex; will be old and new flexbox standards AND get vendor prefixed)
• Loads of other cool and useful stuff.... ;)
• Check out Gruntfile.js in order to check it out. Not the easiest going, but useful to learn.

An instance of this app is hosted, BTW, at http://udacity-conf.appspot.com/.