Dune HD media player description (#1502)

* WAQI sensor description.

* Rework as Markdown table.

* Dune HD media player documentation.

* Correct description with suggestions from @Landrash

source/_components/media_player.dunehd.markdown

@@ -0,0 +1,33 @@
+---
+layout: page
+title: "DuneHD media players"
+description: "Instructions how to integrate DuneHD media players into Home Assistant."
+date: 2016-11-26 09:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: dunehd.png
+ha_category: Media Player
+ha_iot_class: "Local Polling"
+ha_release: 0.34
+---
+
+
+The `dunehd` platform allows you to control a [Dune HD media player](http://dune-hd.com/eng/products/full_hd_media_players) from Home Assistant. Support is based on the official [IP protocol](http://dune-hd.com/support/ip_control/dune_ip_control_overview.txt) published by Dune.
+
+Devices with firmware 110127_2105_beta or above are supported. Some functions may depend on the version of the protocol (volume / mute control is only available with version 2 onwards).
+
+To add a Dune HD player to your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+media_player:
+  - platform: dunehd
+    host: IP_ADDRESS
+```
+Configuration variables:
+
+- **host** (*Required*): IP address or hostname of the device. Example: 192.168.1.32
+- **name** (*Optional*): Name of the device
+- **sources** (*Optional*): A name-value dictionary of sources that HA component can request to play.