Document AppImage portable mode

diff --git a/README.md b/README.md
index 31236f5..f64ad21 100644 (file)
--- a/README.md
+++ b/README.md
@@ -135,6 +135,8 @@ With this option the loading and run time is the same as for a packaged release.
 
 There are also options to install desktop icons, menu items, and to revert to earlier downloaded versions.
 
 
 There are also options to install desktop icons, menu items, and to revert to earlier downloaded versions.
 

+AppImages have a "portable mode" which is described [here](https://docs.appimage.org/user-guide/portable-mode.html).
+

 ### Installation scripts
 
 Geeqie is stable and you may compile the latest version from sources.
 ### Installation scripts
 
 Geeqie is stable and you may compile the latest version from sources.