machine:
  node:
    version: 6

dependencies:
  override:
    - cd frontend && npm install --dev

test:
  override:
    - cd frontend && npm test

machine:
  node:
    version: 6

dependencies:
  override:
    - cd frontend && npm install

test:
  override:
    - cd frontend && npm test

Remove `--dev` from `npm install` command - deprecated
Remove `--dev` from `npm install` command - deprecated
