Fixed tests

Author: syrusakbary

graphene_django/tests/urls_pretty.py

@@ -1,7 +1,6 @@
 from django.conf.urls import url
 
-from graphql_django_view import GraphQLView
-
+from ..views import GraphQLView
 from .schema_view import schema
 
 urlpatterns = [

graphene_django/views.py

@@ -55,6 +55,7 @@ class GraphQLView(View):
     graphiql_version = '0.7.8'
     graphiql_template = 'graphene/graphiql.html'
 
+    schema = None
     graphiql = False
     executor = None
     middleware = None