You'll need npm, bower, and gulp.
From the google_places_api directory:
$ npm install -g gulp
$ npm install
$ bower install
$ gulp
$ open index.html
If you'd like to avoid being asked for your location each time you visit the page, you can set up a simple HTTP server by running
python -m SimpleHTTPServer
in the google_places_api directory and visiting localhost:8000/index.html.

