This tool calls the API provided by the RM Bridge Android App so you can use a Broadlink device to read IR codes from your remote control(s) and put them into an OpenHAB2 transformation/map file so OpenHAB2 can replay them through the same or different Broadlink devices.
Download the project into a local directory and open index.html in your favourite browser. Further instructions are provided on that page.
Further information is available on the OpenHAB2 forum topic about the Broadlink binding.