Use tox to run tests

.gitignore

@@ -4,3 +4,4 @@ pytoml.egg-info/
 venv/
 .idea/
 __pycache__/
+.tox/

.travis.yml

+sudo: false
 language: python
 python:
     - "2.6"
@@ -5,4 +6,5 @@ python:
     - "3.3"
     - "3.4"
     - "3.5"
-script: python ./setup.py install && python ./test/test.py
+install: pip install tox-travis
+script: tox

tox.ini

+[tox]
+envlist = py26,py27,py33,py34,py35
+[testenv]
+commands=
+    python ./test/test.py