language: node_js
node_js:
  - 6

addons:
  apt:
    packages:
      - xvfb

install:
  - export DISPLAY=':99.0'
  - Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &

before_script:
  - npm install

language: node_js
node_js:
  - 7
  - 6

addons:
  apt:
    packages:
      - xvfb

install:
  - export DISPLAY=':99.0'
  - Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &

before_script:
  - npm install

Use nodejs 7.6 in Travis.
Use nodejs 7.6 in Travis.
