This application uses Apache Cordova. So the basic requirements are Node.js including npm. Additionally you will need the SDKs depending on what platforms you want to build the application for.
Install dependancies like bootstrap with npm:
npm install
Build Javascripts und Stylesheets from src/ -folder:
./node_modules/gulp/bin/gulp.js run
Add target-platform:
cordova platform add android
Build the application:
cordova build android