Upgrade setuptools

Author: Luka Bratos

.travis.yml

@@ -5,6 +5,8 @@ python:
   - "2.7"
   - "3.3"
   - "3.4"
+before_install:
+  - pip install --upgrade setuptools
 install: 
   - "python setup.py develop"
   - if [[ $TRAVIS_PYTHON_VERSION == '3.3' ]]; then pip install aiohttp==0.17.4; fi