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 multi_key_dict
 ======================
 
+Implementation of a multi-key dictionary, i.e.:
+
+(key1[,key2, ..]) => value
+
+This dictionary has a similar interface to the standard dictionary => but is extended to support multiple keys referring to the same element.
+
+If element is created using multiple keys, e.g.:
+
+.. code:: python
+
+    from multi_key_dict import multi_key_dict
+
+    k = multi_key_dict()
+    k[1000, 'kilo', 'k'] = 'kilo (x1000)'
+
+    print k[1000] # will print 'kilo (x1000)'
+    print k['k'] # will also print 'kilo (x1000)'
+    
+    # the same way objects can be updated, deleted: 
+    # and if an object is updated using one key, the new value will
+    # be accessible using any other key, e.g. for example above:
+    k['kilo'] = 'kilo'
+    print k[1000] # will now print 'kilo' as value was updated
+    
+These elements can be accessed using either of those keys (e.g for read/update/deletion).
+
+Multi-key dict provides also extended interface for iterating over items and keys (e.g. by the key type), which might be useful when creating, e.g. dictionaries with index-name key pair allowing to iterate over items using either: names or indexes.
+It can be useful for many many other similar use-cases, and there is no limit to the number of keys used to map to the value.
+
+There are few other useful methods, e.g. to iterate over dictionary (by/using) selected key type, finding other keys mapping to the same value etc. Refer to example/test code to see it in action.
+
+PyPi
+========
 distribution can be found on pypi:
 
 * https://pypi.python.org/pypi?:action=display&name=multi_key_dict