App is made in Play framework - click https://www.playframework.com/documentation/latest/Home for more details.
App demo is live on https://gibanica.scalingo.io .
Run this using sbt:
--> sbt run
And then go to http://localhost:9000 to see the running web application.
Don't have sbt? click here - http://www.scala-sbt.org/0.13/docs/Setup.html