language: node_js
node_js:
  - '6'
  - '8'
  - '10'
before_script:
  - npm install -g gulp
script:
  - gulp build

language: node_js
node_js:
  - '8'
  - '10'
before_script:
  - npm install -g gulp
script:
  - gulp build

Drop testing for Node v6
Drop testing for Node v6

Fixes build errors due to syntax limitations of Node v6.
