docs/8-custom-actions.md in activeadmin-0.4.0 vs docs/8-custom-actions.md in activeadmin-0.4.1

@@ -90,9 +90,15 @@
 
     action_item :only => :show do
       link_to('View on site', post_path(post)) if post.published?
     end
 
+Actions items also accept the :if option to conditionally display them:
+
+    action_item :only => :show, :if => proc{ current_admin_user.super_admin? } do
+      "Only display this to super admins on the show screen"
+    end
+
 ### Page Titles
 
 The page title for the custom action will be the internationalized version of
 the controller action name. For example, a member_action named "upload_csv" will
 look up a translation key of "active_admin.upload_csv". If none are found, it