message: ci: Running multiple Node.js versions on Appveyor
diff: # Test against the latest version of this Node.js version
  environment:
  - nodejs_version: "8"
  + matrix:
  + - nodejs_version: "6"
  + - nodejs_version: "8"
  + - nodejs_version: "10"
  # Install scripts. (runs after repo cloning)
  install:
  