Update README.md

Author: rdeioris

README.md

@@ -836,6 +836,8 @@ We still do not have a plugin icon ;)
 
 The build system is not very robust. Maybe linking the python static library into the plugin dll could be a better approach.
 
+Investigate what to do with threads (maybe disallowing unreal engine calls in python threads should be enough)
+
 We need to find a way for automatic testing :)
 
 Contacts