Update tox.ini (#246)
Update tox.ini (#246)

Updated tox file to not pull in a django 1.10 build when testing against django 1.9
Instawork/django-rest-framework-json-api,abdulhaq-e/django-rest-framework-json-api,leo-naeka/django-rest-framework-json-api,django-json-api/django-rest-framework-json-api,django-json-api/rest_framework_ember,pombredanne/django-rest-framework-json-api,django-json-api/django-rest-framework-json-api