tune travis conf

.travis.yml

@@ -13,7 +13,7 @@ install:
     - pip install -q pytest==2.9.0
     - pip install -q .
 # command to run tests
-script: pytest --addopts "-s --verbose --cov=signit --cov-report=term tests"
+script: py.test --cov=signit tests
 
 after_success:
   coveralls