Install NodeJS from here https://nodejs.org/ and then install bower using the node package manager (npm) that comes with NodeJS:
npm install -g bower
Once git cloned, run the following commands having navigated to the relevant directory in the command line or terminal:
npm install
bower install
This will download all of the relevant dependencies you will need to get going.
To run the app, call:
npm start
Application configuration can be found in config/default.json