Accessible SVG

Currently, it is not possible to make an SVG QR Code accessible.  Screen readers will not be able to read the title / description of the SVG.
One way to achieve this would be to add a title element inside the SVG. The currently existing title property could be used for this.

```
<svg xmlns="http://www.w3.org/2000/svg">
  <title>QR Code</title>
  <path></path>
  <path></path>
  ...
</svg>
```