Note about tox in readme

yprez · yprez · commit 180114078fb5 · 2016-02-08T20:26:47.000+02:00
diff --git a/README.md b/README.md
@@ -69,12 +69,17 @@ tests
 
 Run the unit tests:
 
-    $ python ttp/tests.py 
+    $ python ttp/tests.py
     ....................................................................................................
     ----------------------------------------------------------------------
     Ran 100 tests in 0.009s
     OK
 
+Or test on multiple Python versions with tox:
+
+    $ pip install tox
+    $ tox
+
 
 contributing
 ------------
