message: document how to add a chat widget to a page
diff: @@ -31,13 +31,25 @@ While viewing one of those examples, you can open the web console in your browse
  try how you can create a button:
  ```js
  const solidLogo = 'https://solidproject.org/assets/img/solid-emblem.svg'
  -const exampleFolder = 'https://example-user.inrupt.net/public/public-control/'
  const myButton = UI.widgets.button(document, solidLogo, 'test', () => window.alert('clicked!'))
  UI.widgets.clearElement(document.body)
  document.body.appendChild(myButton)
  +```
  +
  +Or a chat widget:
  +```js
  +const chatChannel = 'https://example-user.inrupt.net/public/example-chat/index.ttl#this'
  +const chat = UI.infiniteMessageArea(document, UI.store, UI.rdf.namedNode(chatChannel))
  +document.body.appendChild(chat)
  +```
  +
  +Or a full ACL Control Box:
  +```js
  +const exampleFolder = 'https://example-user.inrupt.net/public/public-control/'
  const aclControlBox = UI.aclControl.ACLControlBox5(UI.rdf.namedNode(exampleFolder), { dom: document }, '', UI.store)
  document.body.appendChild(aclControlBox)
  ```
  +
  See https://solid.github.io/solid-ui/Documentation/api/ for the API documentation.
  ## Overview
  