Add .travis.yml
Forget 3.2 from travis tests
Add six in requirements
And forget 2.6 from travis tests now
Fixing tests in Python 3
Merge pull request #51 from keitheis/test_with_travis

Test with travis
Merge pull request #52 from keitheis/fix-tests-on-python-3

Fixing tests in Python 3
Allow py3 and py2 message of import error in test
Simpler, more robust test for ImportError text
Fix py3 compatibility in YAML tests