README.md in darkhelmet-role_on-0.2.0 vs README.md in darkhelmet-role_on-0.2.1

@@ -62,8 +62,18 @@
 
     role_on(:foo_admin, :sa => :super_admin)
 
 In that case, users who either have the :foo_admin or :super_admin role will have access
 
+You can also define a role_on_defaults method on things to define default arguments
+
+In application_controller:
+
+    def role_on_defaults
+      { :sa => :my_sa_role }
+    end
+
+In all sub controllers, :my_sa_role will be the value of :sa. This can be overridden.
+
 # License
 
 See LICENSE for details.