Fix tests, add tox.ini and travis.yml

tox.ini

@@ -0,0 +1,11 @@
+[tox]
+envlist = py27,py34,py35,py36
+skip_missing_interpreters = True
+
+[testenv]
+commands =
+    python setup.py test
+
+[testenv:py27]
+deps =
+    configparser