Add documentation for related_views

Author: Natureshadow

docs/menugeneration.rst

@@ -11,6 +11,7 @@ Django Menu Generator uses python dictionaries to represent the menu items, usua
         "url": URL spec,
         "root": True | False,
         "related_urls": [ list of related URLs ],
+        "related_views": [ list of related views ],
         "validators": [ list of validators ],
         "submenu": Dictionary like this
     }
@@ -25,6 +26,8 @@ Where each key is as follows:
 
 - ``related_urls``: If one of this URLs is part of the path on the currently opened page, the menu item will be marked as selected (format of URLs like described at :doc:`urls`)
 
+  - ``related_views``: If the currently opened page resolves to one of these views, the menu item will be marked as selected.
+
 - ``root``: A flag to indicate this item is the root of a path, with this you can correctly mark nested menus as selected.
 
 - ``validators``: See :doc:`validators`
@@ -89,4 +92,4 @@ With this feature you can have a project structure like this::
     │
      ...
 
-You can have a mix of the two approaches if you wish
+You can have a mix of the two approaches if you wish