Initial docs

docs/index.rst

@@ -11,4 +11,5 @@ Contents:
    filtering
    authorization
    debug
+   rest-framework
    introspection

docs/rest-framework.rst

@@ -0,0 +1,21 @@
+Integration with Django Rest Framework
+======================================
+
+You can re-use your Django Rest Framework serializer with
+graphene django.
+
+
+Mutation
+--------
+
+You can create a Mutation based on a serializer by using the
+`SerializerMutation` base class:
+
+.. code:: python
+
+    from graphene_django.rest_framework.mutation import SerializerMutation
+
+    class MyAwesomeMutation(SerializerMutation):
+        class Meta:
+            serializer_class = MySerializer
+