Add Deluge Sensor documentation (#3760)

* Add Deluge Sensor documentation

* Minor changes

source/_components/sensor.deluge.markdown

@@ -0,0 +1,42 @@
+---
+layout: page
+title: "Deluge Sensor"
+description: "Instructions how to integrate Deluge sensors within Home Assistant."
+date: 2017-10-24 17:06
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: deluge.png
+ha_category: Downloading
+ha_release: 0.57
+ha_iot_class: "Local Polling"
+---
+
+
+The `deluge` platform allows you to monitor your downloads with [Deluge](http://deluge-torrent.org/) from within Home Assistant and setup automation based on the information.
+
+To enable this sensor, add the following lines to your `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: deluge
+    host: IP_ADDRESS
+    monitored_variables:
+      - 'current_status'
+      - 'download_speed'
+      - 'upload_speed'
+```
+
+Configuration variables:
+
+- **host** (*Required*): This is the IP address of your Deluge daemon, eg. 192.168.1.32.
+- **port** (*Optional*): The port your Deluge daemon uses. Defaults to 58846. Warning, this is not the port of the WebUI.
+- **name** (*Optional*): The name to use when displaying this Deluge instance.
+- **username** (*Optional*): Your Deluge username, if you use authentication.
+- **password** (*Optional*): Your Deluge password, if you use authentication.
+- **monitored_variables** array (*Required*): Conditions to display in the frontend.
+  - **current_status**: The status of your Deluge daemon.
+  - **download_speed**: The current download speed.
+  - **upload_speed**: The current upload speed.