CI/CD con Travis en Github (Medium post)

polymer.json

{
  "lint": {
    "rules": [
      "polymer-3"
    ]
  },
  "entrypoint": "demo/index.html",
  "extraDependencies": [
  	"your-component.js"
  ],
  "builds": [{ "preset": "es6-bundled" }],
  "moduleResolution": "node",
  "npm": true
}