Update README.md

Author: hballard

README.md

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 # graphql-python-subscriptions
 A port of apollographql subscriptions for python, using gevent websockets and redis
 
-This is a implementation of apollographql subscriptions-transport-ws and graphql-subscriptions in Python. It currently implements a pubsub using redis.py and gevent for concurrency.  It also makes heavy uses of syrusakbary/promise python implementation to mirror the logic in the apollographql libraries.
+This is a implementation of apollographql subscriptions-transport-ws and graphql-subscriptions in Python. 
+It currently implements a pubsub using redis.py and uses gevent for concurrency.  It also makes heavy use of 
+syrusakbary/promise python implementation to mirror the logic in the apollo-graphql libraries.
+
+Meant to be used in conjunction with graphql-python / graphene server and apollo-graphql client.
+
+Very initial implementation.  Currently only works with Python 2.  No tests yet.