docs: add AppImage to readme [skip ci]

README.md

@@ -159,6 +159,12 @@ sudo yum update
 sudo yum install klogg
 ```
 
+There is also an AppImage package that can be used without installation. To run klogg from AppImage, download the package and make in executable with either a file manager or terminal command `chmod +x <path_to_klogg_AppImage>` and then run the AppImage file.
+
+AppImage uses FUSE2 and Ubuntu 22.04 has moved away from FUSE2 into FUSE3 and therefore you need to install the necessary package to enable compatibility with FUSE2 `sudo apt install libfuse2`.
+
+As indicated by this link from the official appimage documentation: https://docs.appimage.org/user-guide/troubleshooting/fuse.html#setting-up-fuse-2-x-alongside-of-fuse-3-x-on-recent-ubuntu-22-04-debian-and-their-derivatives
+
 ### Testing builds
 
 ![CI Build and Release](https://github.com/variar/klogg/workflows/CI%20Build%20and%20Release/badge.svg)