Add Dyson sensor docs

source/_components/sensor.dyson.markdown

@@ -0,0 +1,24 @@
+---
+layout: page
+title: "Dyson Purifier Sensor"
+description: "Instructions how to setup the Dyson Purifier fans within Home Assistant."
+date: 2017-05-27 10:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: dyson.png
+ha_category: Sensor
+ha_iot_class: "Cloud Polling"
+ha_release: 0.47
+---
+
+
+The `dyson` sensor platform allows you to control your Dyson Purifier's filter life time.
+
+You have first to setup the [Dyson component](/components/dyson/)
+
+### {% linkable_title Supported fan devices %}
+
+- Pure Cool link (desk and tower)
+- Pure Hot+cool link (but heating is not yet supported)