message: chore(example): fix IE example
diff: "lit-element": "^2.2.0",
  "lit-html": "^1.1.0",
  "lodash-es": "^4.17.0",
  + "resize-observer-polyfill": "^1.5.0",
  "webpack": "^4.39.0",
  "webpack-cli": "^3.3.0",
  "webpack-dev-server": "^3.8.0"
  