Creating new catalog.json file

See https://github.com/ThomasK81/TEItoCEX/releases for package. (you might have to chmod +x the executable before you can use it)

1. Run TEItoCEX in the data folder of First1K master: ./TEItoCEX catalog.json -Cat (adjust for your OS)
2. The resulting catalog.json should be placed in the root of the master branch
3. Follow the usual update and pull request steps and after someone has reviewed it
4. Enjoy the updated website. :D