Use tox on Travis.

.travis.yml

@@ -1,12 +1,10 @@
 language: python
-python:
+before_install:
- - 2.6
+    - sudo apt-get update -qq -y
- - 2.7
+    - sudo apt-get install python3.4
- - pypy
+
- - 3.3
+install:
-#- 3.4
+    - pip install tox six
-matrix:
+
-  fast_finish: true
-install: python setup.py install
 before_script: mysql -e 'create database mysqldb_test charset utf8;'
-script: TESTDB=travis.cnf nosetests
+script: tox