Add test script to .travis.yml

Author: epels

.travis.yml

@@ -8,6 +8,8 @@ python:
   - 'nightly'
 install:
   - pip install mock==2.0
+script:
+  - python -m unittest discover -s tests/ -p test_*.py -v
 matrix:
   allow_failures:
   - python: 'nightly'