That would be the easy option I think. It may well be possible to get it working (the code in that repo might be overly complex) but it depends how much time you're wanting to spend!
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
That would be the easy option I think. It may well be possible to get it working (the code in that repo might be overly complex) but it depends how much time you're wanting to spend!