Fix the tests, and enable them for Python 2.7, 3.5, 3.6, 3.7.

Updated the documentation as well to make clear which Python versions are
officially supported.

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 8a33f99c..2c63c292 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py33, py34
+envlist = py27, py35, py36, py37
 [testenv]
 deps =
     nose