message: chore(ci): use npm to install greenkeeper-lockfile for now
diff: @@ -7,7 +7,9 @@ cache:
  notifications:
  email: false
  before_install:
  - - yarn global add greenkeeper-lockfile@1
  + # TODO: Switch this back to yarn when greenkeeperio/greenkeeper-lockfile#98 is fixed.
  + # https://github.com/greenkeeperio/greenkeeper-lockfile/issues/98
  + - npm install --global greenkeeper-lockfile@1
  before_script:
  - greenkeeper-lockfile-update
  after_script:
  