message: Add greenkeeper-lockfile
diff: @@ -10,6 +10,7 @@ addons:
  env:
  global:
  - SUPPRESS_NO_CONFIG_WARNING=true
  + - GK_LOCK_YARN_OPTS='--ignore-engines'
  cache:
  yarn: true
  @@ -19,12 +20,17 @@ cache:
  before_install:
  - curl -o- -L https://yarnpkg.com/install.sh | bash
  - export PATH=$HOME/.yarn/bin:$PATH
  + - yarn global add greenkeeper-lockfile@1
  install:
  + - greenkeeper-lockfile-update
  - yarn --prefer-offline --frozen-lockfile --ignore-engines
  script:
  - yarn lint && yarn test:translations && yarn test:cover
  +after_script:
  + - greenkeeper-lockfile-upload
  +
  after_success:
  - cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
  