Try again to make travis-ci install the package before running tests

Author: edschofield

.travis.yml

@@ -11,5 +11,6 @@ python:
 # No dependencies currently unless using Python 2.6.
 install:
   - if [[ $TRAVIS_PYTHON_VERSION == 2.6* ]]; then pip install -r requirements_py26.txt --use-mirrors; fi
+  - python setup.py install
 # command to run tests, e.g. python setup.py test
-script:  python setup.py install && python setup.py test
+script:  python setup.py test