Document 'divided' option

Author: avalanchy

README.md

@@ -60,6 +60,7 @@ Installation
                 'url': reverse('convert_stuff', args=[obj.id]),
                 'tooltip': 'Convert stuff',
             }, {
+                'divided': True,
                 'label': 'Cancel',
                 'action': 'mark_cancelled',
             },
@@ -74,6 +75,8 @@ The final one defines 'action' instead of 'url'. This should be the name of a ca
 
 You can add mouseover tooltips to each individual actions with the 'tooltip' dictionary key, and enable/disable individual actions for each individual object with the 'enabled'.
 
+Special option 'divided' can be passed to any item to display horizontal rule above it.
+
 
 Credits
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