language: node_js
node_js:
  - "8"
before_install:
  - npm i -g npm@6.0.1
  - npm i -g greenkeeper-lockfile@1
before_script: greenkeeper-lockfile-update
after_script: greenkeeper-lockfile-upload

language: node_js
node_js:
  - "8"
install: npm install
before_install:
  - npm i -g npm@6.1.0
  - npm i -g greenkeeper-lockfile@1
before_script: greenkeeper-lockfile-update
after_script: greenkeeper-lockfile-upload

Use NPM@6.1 and npm install for TravisCI
Use NPM@6.1 and npm install for TravisCI
