Add a tox.ini to run tests
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..5a1ba14
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,8 @@
+[tox]
+envlist = py26,py27,pypy,py33,py34,py35,
+
+[testenv]
+deps =
+    Cython
+commands =
+    python setup.py test