language: node_js
node_js:
  - "stable"
  - "4.3"
  - "4.2"
before_script:
  - npm install -g gulp
  - gulp startServer &
script: gulp

language: node_js
node_js:
  - "stable"
  - "4.3"
  - "4.2"
before_script:
  - node_modules/gulp/bin/gulp.js startServer &
script: node_modules/gulp/bin/gulp.js clean default

Remove Travis CI global gulp installation
Remove Travis CI global gulp installation

I do not believe it is necessary, and it adds over six seconds to
Travis CI build times.
