Update README.md

Author: runxel

README.md

@@ -55,8 +55,9 @@ Copy _one_ of these into the new file and save:
 ```
 
 #### Don't like the theme?
-Don't worry. Go to the [ththeme-editor](http://tmtheme-editor.herokuapp.com/) and select one of the two themes as start and make one which satisfies you! (Note that the theme-editor of course has no preview for gdl code, so it's just direct scope color editing.)
-Also, you could edit the `.thTheme` files directly.
+Don't worry. Go to the [ththeme-editor](http://tmtheme-editor.herokuapp.com/) and select one of the two themes as start and make one which satisfies you! (Note that the theme-editor of course has no preview for gdl code, so it's just direct scope color editing.)  
+_See the [Wiki](https://github.com/runxel/GDL-sublime/wiki) for a list with the scopes so you can refine the scheme to suit your needs._  
+Of course you could also edit the `.thTheme` files directly. Remember not to save it next to provided one. Otherwise an update could overwrite your changes.
 
 ### Auto completion + Snippets
 You may have to force the auto completion via <kbd>ctrl</kbd> + <kbd>space</kbd>.