started on some docs for django channels

Author: colanconnon

README.md

@@ -104,3 +104,78 @@ schema = graphene.Schema(query=Query, subscription=Subscription)
 ```
 
 You can see a full example here: https://github.com/graphql-python/graphql-ws/tree/master/examples/flask_gevent
+
+
+### Django Channels
+
+
+First `pip install channels` and it to your django apps
+
+Then add the following to your settings.py
+
+```python
+    CHANNELS_WS_PROTOCOLS = ["graphql-ws", ]
+    CHANNEL_LAYERS = {
+        "default": {
+            "BACKEND": "asgiref.inmemory.ChannelLayer",
+            "ROUTING": "django_subscriptions.urls.channel_routing",
+        },
+
+    }
+```
+
+Setup your graphql schema
+
+```python
+import graphene
+from rx import Observable
+
+
+class Query(graphene.ObjectType):
+    hello = graphene.String()
+
+    def resolve_hello(self, info, **kwargs):
+        return 'world'
+
+class Subscription(graphene.ObjectType):
+
+    count_seconds = graphene.Int(up_to=graphene.Int())
+
+
+    def resolve_count_seconds(
+        root, 
+        info, 
+        up_to=5
+    ):
+        return Observable.interval(1000)\
+                         .map(lambda i: "{0}".format(i))\
+                         .take_while(lambda i: int(i) <= up_to)
+
+
+
+schema = graphene.Schema(
+    query=Query,
+    subscription=Subscription
+)
+
+
+````
+
+Setup your schema in settings.py
+
+```python
+GRAPHENE = {
+    'SCHEMA': 'path.to.schema'
+}
+```
+
+and finally add the channel routes
+
+```python
+from channels.routing import route_class
+from graphql_ws.django_channels import GraphQLSubscriptionConsumer
+
+channel_routing = [
+    route_class(GraphQLSubscriptionConsumer, path=r"^/subscriptions"),
+]
+```