add requirements

requirements.txt

+# 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==1.5.4
+Twisted==13.1.0
+

requirements/local.txt

+# Local development dependencies go here
+-r base.txt

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
+

requirements/test.txt

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