message: Fix typo in README example
diff: @@ -35,11 +35,11 @@ import { Element } from '../../@polymer/polymer/polymer-element.js';
  export const MyElement = class extends Element {
  static get template() {
  return `
  - <h2>Hello [[prop1]]!</h2>
  + <h2>Hello Modules!</h2>
  `;
  }
  - static get is() { return 'p6-element'; }
  + static get is() { return 'my-element'; }
  // ...
  }
  window.customElements.define(MyElement.is, MyElement);
  