Added indexes and Django use to docs

docs/django.rst

@@ -0,0 +1,29 @@
+=============================
+Using MongoEngine with Django
+=============================
+
+Connecting
+==========
+In your **settings.py** file, ignore the standard database settings (unless you
+also plan to use the ORM in your project), and instead call 
+:func:`~mongoengine.connect` somewhere in the settings module.
+
+Authentication
+==============
+MongoEngine includes a Django authentication backend, which uses MongoDB. The
+:class:`~mongoengine.django.auth.User` model is a MongoEngine 
+:class:`~mongoengine.Document`, but implements most of the methods and 
+attributes that the standard Django :class:`User` model does - so the two are
+moderately compatible. Using this backend will allow you to store users in 
+MongoDB but still use many of the Django authentication infrastucture (such as
+the :func:`login_required` decorator and the :func:`authenticate` function). To
+enable the MongoEngine auth backend, add the following to you **settings.py**
+file::
+    
+    AUTHENTICATION_BACKENDS = (
+        'mongoengine.django.auth.MongoEngineBackend',
+    )
+
+The :mod:`~mongoengine.django.auth` module also contains a 
+:func:`~mongoengine.django.auth.get_user` helper function, that takes a user's
+:attr:`id` and returns a :class:`~mongoengine.django.auth.User` object.