Update .travis.yml

.travis.yml

@@ -22,7 +22,7 @@ before_install:
   - sudo pip install pillow
 
 # command to install dependencies, e.g. pip install -r requirements.txt --use-mirrors
-# install:  sudo pip install -r requirements.txt --no-deps
+install:  echo 'nothing to do here'
 
 # command to run tests, e.g. python setup.py test
 script: nosetests tests/*