Updated django-rest-framework version requirement
Updated django-rest-framework version requirement

netjson/django-netjsongraph,interop-dev/django-netjsongraph,netjson/django-netjsongraph,netjson/django-netjsongraph,netjson/django-netjsongraph,interop-dev/django-netjsongraph,interop-dev/django-netjsongraph