Add Dyson Pure Cool Link support (#2721)

* Add Dyson Pure Cool Link support

* Code review

source/_components/dyson.markdown

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+---
+layout: page
+title: "Dyson"
+description: "Instructions how to integrate Dyson into Home Assistant."
+date: 2017-05-27 10:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: dyson.png
+ha_category: Hub
+featured: false
+ha_release: 0.46
+---
+
+The Dyson component is the main component to integrate all [Dyson](https://dyson.com) related platforms (only Cool Link Purifier at this time).
+
+### {% linkable_title Configuration %}
+
+```yaml
+dyson:
+  username: <dyson_account_user_email>
+  password: <dyson_acount_password>
+  language: <dyson_account_language>
+  devices:
+    - device_id: <device_id_1>
+      device_ip: <device_ip_1>
+    - device_id: <device_id_2>
+      device_ip: <device_ip_2>
+    ...
+```
+
+Configuration variables:
+
+- **username** (*Required*): Dyson account username (email address)
+- **password** (*Required*): Dyson account password
+- **language** (*Required*): Dyson account language country code. Known working codes: `FR`, `NL`, `UK`, `AU`. But others codes should work.
+- **devices** (*Optional*): List of devices
+  - **device_id** (*Required*): Device ID. Available in the mobiles applications (*Settings* page)
+  - **device_ip** (*Required*): Device IP address
+
+`devices` list is optional but you'll have to provide them if discovery is not working (warnings in the logs and the devices are not available in Home Assistant web interface).
+To find devices IP address, you can use your router or `nmap`:
+```
+$ nmap -p 1883 XXX.XXX.XXX.XXX/YY -- open
+```
+Where:
+- **XXX.XXX.XXX.XXX** is your network address
+- **YY** is your network mask
+
+For example:
+```
+$ nmap -p 1883 192.168.0.0/24 -- open
+```

source/_components/fan.dyson.markdown

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+---
+layout: page
+title: "Dyson Purifier Fan"
+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: Fan
+ha_release: 0.46
+---
+
+
+The Dyson fan platform allows you to control your Dyson Purifier fans (Dyson Pure Heat/Cool link).
+
+You have first to setup the [Dyson component](/components/dyson/)
+
+### Supported fan devices
+
+- Pure Cool link (desk and tower)
+- Pure Hot+cool link (but heating is not yet supported)