language: node_js
before_script:
  - npm install -g npm
  - npm --version
  - rm -r node_modules
  - npm cache clean
  - npm install
  - npm install -g gulp
script: gulp test-ci
node_js:
  - "6.1.0"
  - "6.0.0"
  - "5.0.0"
  - "4.4.4"