Run tests with Python 3.5 on Travis

Author: takluyver

.travis.yml

@@ -3,6 +3,7 @@ python:
   - "2.7"
   - "3.3"
   - "3.4"
+  - "3.5"
 # command to run tests
 script: coverage run --branch --source=libmodernize setup.py test
 # Ensure dependencies are installed