Function brandingUrl

brandingUrl(json?): void
Add a branding image to the top hearder bar. For mobile devices, the image should be 40px in height. For desktop use, the image should be 50px in height. The image must be served using https://
Parameters
- json: {
  url: string;
  urlmobile: string;
  } = ...
  - url: string
  - urlmobile: string
Returns void
Example
Put a red dot in the header.
```
* { "url": "https://deepzoom.com/dotRed.png", "urlmobile": "https://www.deepzoom.com/dotRed.png"}"
```