Adds documentation for Plaato Airlock (#9398)

* Adds documentation for Plaato Airlock

* Fixes typo

* Adds logo and text describing the platform was not made by Plaato

* Removes quotes as per suggestion in review

* ✏️ Tweaks

source/_components/plaato.markdown

@@ -0,0 +1,28 @@
+---
+layout: page
+title: "Plaato Airlock"
+description: "Instructions on how to integrate Plaato Airlock sensors within Home Assistant."
+date: 2019-05-07 01:15
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: plaato.png
+ha_release: 0.95
+ha_category:
+  - Sensor
+ha_iot_class: Cloud Push
+---
+
+This component sets up integration with [Plaato Airlock](https://www.plaato.io/).
+Plaato Airlock is a tool for beer brewers that wants a unique insight into the fermentation process.
+With this integration, you get all your fermentation data available in Home Assistant!
+
+## {% linkable_title Configuration %}
+
+To configure Plaato Airlock, you must set it up via the integrations panel in the Home Assistant frontend.
+
+This will give you the webhook URL to use in the PLAATO mobile app configuration on the tab "Webhook". 
+More information can be found [here](https://plaato.io/apps/help-center#!hc-general).
+
+This sensor platform was not made by Plaato. It is not official, not developed, and not supported by Plaato.