add image to readme

README.md

@@ -6,6 +6,8 @@ It works without connecting to other servers, the inserted models stay on the lo
 The plugin also has an interface to a converter service which can convert IFC files to glb models. This will require the IFC file to be sent
 to the service. It will be temporarily stored on the server and will be deleted on the server after the conversion process is completed.
 
+![plugin image](doc/Plugin.png)
+
 
 ## Plugin Configuration