This unofficial Kodi add-ons repository is based on drinfernoo's repository.example template and the Add-on zips/Repo XML Generator python script.
To automate the process of updating/adding to the repo even further and eliminate the continuous need of access to a personal computer, I have setup a continuous integration configuration script for Travis-CI that runs the xml/zip generator python script on a virtual machine in the cloud each time I push a commit of a new or updated unzipped add-on folder to the root directory of this repository and makes and pushes another followup commit with the generated/updated contents of the zips folder.
Feel free to look around or open an issue to ask me how you can do it too, it's simpler than you think.
Have fun with the add-ons!
Daedalus