Can you see the readme on the itch app?
The itch app should let you view local files (maybe right click on the game?), but if it doesn't, you can see the README online here: https://github.com/y2bd/junk/blob/master/README_DISTRIB.md
Also note that this only works on the Windows version of the game. Unfortunately I've not been able to get my hands on a Mac to republish the game with the latest changes yet, apologies if that's what you're playing.