message: Add MultiFormat example
diff: <h3>Scanning Examples</h3>
  <ul>
  + <li>
  + <strong>Multi-format (1D/2D)</strong>
  + <ul>
  + <li>
  + <a href="examples/multi-camera">Scan 1D/2D Code from Video Camera</a>
  + </li>
  + <li>
  + <a href="examples/multi-image">Scan 1D/2D Code from Image</a>
  + </li>
  + </ul>
  + </li>
  <li>
  <strong>2D</strong>
  <ul>
  