Pin an explicit version of django-filter (<2) on cookbook example

NoumirPoutipou · NoumirPoutipou · commit a57098b1cb0c · 2018-07-24T04:03:59.000+02:00
diff --git a/examples/cookbook/requirements.txt b/examples/cookbook/requirements.txt
@@ -2,4 +2,4 @@ graphene
 graphene-django
 graphql-core>=2.1rc1
 django==1.9
-django-filter==0.11.0
+django-filter<2
