Add tox.ini for tox (http://tox.testrun.org/)

.gitignore

@@ -9,3 +9,4 @@ dist/
 .DS_Store
 *.swp
 tests/integration/django/grocery/grocery-db.sqlite
+.tox

tox.ini

+# Tox (http://tox.testrun.org/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+[tox]
+envlist = py26, py27
+
+[testenv]
+commands =
+    pip install --use-mirrors -q -r requirements.txt
+    make unit functional