Proper quoting.

Author: stephenmcd

.travis.yml

@@ -3,6 +3,6 @@ python:
   - "2.5"
   - "2.6"
   - "2.7"
-before_script: sudo apt-get install python-dev libevent-dev
+before_script: "sudo apt-get install python-dev libevent-dev"
 install: pip install . --use-mirrors
 script: ./django_socketio/example_project/manage.py test