message: fix(package-json): remove postinstall task
diff: "test:firefox": "cypress run --browser firefox",
  "test:all": "npm run test:chrome && npm run test:firefox",
  "test": "npm run dev:wait test:chrome",
  - "release": "release-it",
  - "postinstall": "cd example && npm install"
  + "release": "release-it"
  },
  "dependencies": {
  "@babel/runtime": "^7.12.1",
  