Using browserify and npm.
To build the site, clone the repo, then:
npm install && npm run-script build
It will need to be running on a web server to work, or if you are on some *nix like system, can do this too:
python -m SimpleHTTPServer
..to get a server running on localhost:8000
While developing, can use:
npm run-script start
to rebuild any modified files on the fly.