awww! I just need a linux version of this! awesome idea, though!
Given that it is based on NWJS, it likely should work, perfectly, out-of-the-box, with NW, a cross-platform interpreter like Python, OpenJDK, or Mono; see more information, here: https://nwjs.readthedocs.io/en/latest/For%20Users/Getting%20Started/
Hope that helped!