Thanks for forking the AppImages project. Unfortunately it looks like GitHub didn't get that this is a fork. To fix that: Please delete this repository on GitHub, then fork https://github.com/probonopd/AppImages using the fork button on GitHub, then make your changes therein. This way you preserve history and it will be much easier to incorporate your changes back to the original repository.
Thanks for forking the AppImages project. Unfortunately it looks like GitHub didn't get that this is a fork. To fix that: Please delete this repository on GitHub, then fork https://github.com/probonopd/AppImages using the fork button on GitHub, then make your changes therein. This way you preserve history and it will be much easier to incorporate your changes back to the original repository.