Update .travis.yml to use gulp - actually, just default to npm test

Author: dalelotts

.travis.yml

@@ -7,10 +7,6 @@ branches:
 before_install:
 - export DISPLAY=:99.0
 - sh -e /etc/init.d/xvfb start
-before_script:
-- npm install -g bower grunt-cli
-- bower install
-script: grunt --verbose
 deploy:
   provider: npm
   email: dale@dalelotts.com