Add a small note about requests-toolbelt
diff --git a/docs/user/quickstart.rst b/docs/user/quickstart.rst
index 78b2cc655f..3e802e19a3 100644
--- a/docs/user/quickstart.rst
+++ b/docs/user/quickstart.rst
@@ -264,6 +264,12 @@ If you want, you can send strings to be received as files::
       ...
     }
 
+In the event you are posting a very large file as a ``multipart/form-data`` 
+request, you may want to stream the request. By default, ``requests`` does not 
+support this, but there is a separate package which does - 
+``requests-toolbelt``. You should read `the toolbelt's documentation 
+<https://toolbelt.rtfd.org>`_ for more details about how to use it.
+
 
 Response Status Codes
 ---------------------

We can add more info to discuss the inclusion of @lukasa's `SSLAdapter`. Are there any objections to adding this information to requests' documentation?
