We actually document this on hackster.io here.
Unfourtunatly that was thrown together at 2:30AM to meet the contest deadline. You might be able to get through it if you already know what you’re doing, but if you’re looking for a bit more guidance we are going to release a series of micro lessons on how we built the project. These will be short to the point and hopefully serve a dual purpose as referenceable IoT Quick Tips sort of thing.
Here are a few to get you started, but you can also search for the #microlearning tag on our site to find others.
Please let us know if this kinda of stuff is useful, cause if it is we will do more!