Sponsored (#1418)

Add note that redis-py is sponsored by Redis Labs

Author: gkorland

README.rst

@@ -959,3 +959,11 @@ Special thanks to:
   which some of the socket code is still used.
 * Alexander Solovyov for ideas on the generic response callback system.
 * Paul Hubbard for initial packaging support.
+
+
+Sponsored by
+^^^^^^^^^^^^
+
+.. image:: ./docs/logo-redislabs.png
+   :alt: RedisLabs
+   :target: https://www.redislabs.com