Add comment about the auto-generated parts of the conf.py

readthedocs/doc_builder/templates/doc_builder/conf.py.tmpl

@@ -1,5 +1,19 @@
 {% load projects_tags %}
 
+
+###########################################################################
+#          auto-created readthedocs.org specific configuration            #
+###########################################################################
+
+
+#
+# The following code was added during an automated build on readthedocs.org
+# It is auto created and injected for every build. The result is based on the
+# conf.py.tmpl file found in the readthedocs.org codebase:
+# https://github.com/rtfd/readthedocs.org/blob/master/readthedocs/doc_builder/templates/doc_builder/conf.py.tmpl
+#
+
+
 import sys
 from six import string_types