language: node_js
node_js:
  - 6
before_install:
  - npm install -g npm@latest
  - npm cache clean
cache:
  directories:
    - node_modules

language: node_js
node_js:
  - 6
before_install:
  - npm install -g npm@latest
cache:
  directories:
    - node_modules

Remove npm cache clean from Travis
Remove npm cache clean from Travis
