message: use docker in travis
diff: +sudo: required
  language: node_js
  node_js:
  - "node"
  +services:
  + - docker
  +before_install:
  + - docker-compose up
  script:
  - yarn lint
  - yarn test
  + - yarn build:runner
  + - yarn build:runner:selianize
  + - yarn build:runner:examples
  + - yarn test:webdriver --server http://localhost:4444/wd/hub
  