Add two-scoops style requirements.txt

requirements.txt

-Django>=1.6,<1.7
-South
-argparse
-distribute
-wsgiref
-djangorestframework>=2.3
-gunicorn>=19.1
+# This file is here because many Platforms as a Service look for
+# requirements.txt in the root directory of a project.
+-r requirements/production.txt

requirements/base.txt

+Django>=1.6,<1.7
+South==1.0
+argparse
+distribute
+wsgiref
+djangorestframework>=2.3

requirements/local.txt

+# Local development dependencies go here
+-r test.txt
+django-debug-toolbar==1.2.1
+Sphinx==1.2.2

requirements/production.txt

+# Pro-tip: Try not to put anything here. There should be no dependency in
+#	production that isn't in development.
+-r base.txt
+
+gunicorn>=19.0,<20.0
\ No newline at end of file

requirements/test.txt

+# Test dependencies go here.
+-r base.txt
+coverage