Maybe this satisfies Travis.

Author: Julian

.travis.yml

@@ -7,5 +7,6 @@ python:
 install:
     - python setup.py -q install
 script:
+    - [[ "$(python -c 'import sys; print sys.version_info[:2]')" == "(2, 6)" ]] && pip install unittest2
     - py.test --tb=native jsonschema
     - python -m doctest README.rst