Usually a README file has a section called "installation" with instructions on how to install it. Looking at the readme here - JoplinSafariWebClipper/README.md at master · cweirup/JoplinSafariWebClipper · GitHub I don't see any instructions.
However, the post I replied to contained instructions.
Just unzip, move the executable to the Applications folder, and run the app once. You’ll be prompted to enable it in Safari Extensions, then you should be good to go.
Which would be useful to include in the readme. Probably the first thing end users want to know is "how do I get the extension?" , next "how do I install it?" and finally "how do I use it? "
