Merge pull request 'README updated. /JL' (#34) from update_readme into main

Reviewed-on: https://gitea.com/Lerking/XtendR/pulls/34

README.md

@@ -16,7 +16,8 @@ I didn't find anything that suited my needs, so I decided to make my own plugin
 It simply contains 2 classes, one for the plugin system and one abstraction base class for the plugins themselves.
 
 At the moment only 4 functions are available:
-- Attach
+
+- Attach - including call to pre-load data in plugin.
 - Run
 - Stop
 - Detach