add tox to the mix

.gitignore

@@ -11,3 +11,4 @@ docs/_build/
 .coverage
 coverage/
 tests/static/js/dummy.js
+.tox/
\ No newline at end of file

tox.ini

+[tox]
+envlist = py25,py26,py27,pypy,docs
+downloadcache = .tox/_download/
+
+[testenv]
+setenv =
+    PYTHONPATH = {toxinidir}/tests
+commands =
+    python {toxinidir}/tests/runtests.py
+deps =
+    django==1.3
+    coverage>=3.4
+    mock>=0.7.2
+
+[testenv:docs]
+changedir = docs
+deps =
+    sphinx
+commands =
+    sphinx-build -W -b html -d {envtmpdir}/doctrees . {envtmpdir}/html