Add clarification of plugin scope to README

There is an issue with users thinking that the WhichKey plugin also sets
keybindings, probably due to the GIF in the README file which gives a
"false" impression. This adaption should clarify this.

Fixes #44 #46

README.md

@@ -4,7 +4,10 @@
 
 [IdeaVim](https://github.com/JetBrains/ideavim) extension that displays available keybindings in a popup similar to [vim-which-key](https://github.com/liuchengxu/vim-which-key)
 
-![idea which key](/assets/idea_which_key.gif)
+![idea which key](./assets/idea_which_key.gif)
+
+> Which-Key only displays **available** keybindings, it will not set them for you ([#44](https://github.com/TheBlob42/idea-which-key/issues/44), [#46](https://github.com/TheBlob42/idea-which-key/issues/46))  
+> For a "complete" setup you might have a look at [intellimacs](https://github.com/MarcoIeni/intellimacs) (which was used for the GIF above)
 
 ## Installation