Added testing requirements file

testing-reqs.txt

+PyZen==0.3.1
+Sphinx==1.1.2
+Werkzeug==0.6.2
+coverage==3.5.1
+django-debug-toolbar==0.8.4
+django-extensions==0.5
+docutils==0.8.1
+flake8==0.8
+ipdb==0.2
+ipython==0.10.1
+mock==0.7.0
+twill==0.9