Use common middleware in channels2 example

Author: SmileyChris

examples/django_channels2/django_channels2/settings.py

@@ -21,6 +21,9 @@
     }
 ]
 
+MIDDLEWARE = [
+    'django.middleware.common.CommonMiddleware',
+]
 
 ROOT_URLCONF = "django_channels2.urls"
 ASGI_APPLICATION = "graphql_ws.django.routing.application"

examples/django_channels2/django_channels2/urls.py

@@ -1,4 +1,4 @@
 from django.urls import path
 from graphene_django.views import GraphQLView
 
-urlpatterns = [path("graphql", GraphQLView.as_view(graphiql=True))]
+urlpatterns = [path("graphql/", GraphQLView.as_view(graphiql=True))]