**Description:**


**Pull request in [home-assistant](https://github.com/home-assistant/home-assistant) (if applicable):** home-assistant/home-assistant#<home-assistant PR number goes here>

## Checklist:

  - [ ] Branch: Fixes, changes and adjustments should be created against `current`. New documentation for platforms/components and features should go to `next`. 
  - [ ] The documentation follow the [standards][standards].

[standards]: https://home-assistant.io/developers/documentation/standards/
