Added Document for KNX Sensor Component (#808)

* Added link to KNX Sensor Dokumentation

Added link to KNX Sensor Dokumentation

* Added Doc for KNX Sensor Componente

Added Doc for KNX Sensor Componente

* Update sensor.knx.markdown

* Update sensor.knx.markdown

Added information about the newly added minimum/maximum value support

source/_components/knx.markdown

@@ -16,7 +16,8 @@ ha_release: 0.24
 
 There is currently support for the following device types within Home Assistant:
 
-- [Binary Sensor](/components/binary_sensor.knx) 
+- [Binary Sensor](/components/binary_sensor.knx)
+- [Sensor](/components/sensor.knx)
 - [Switch](/components/switch.knx)
 - [Thermostat](/components/thermostat.knx)
 

source/_components/sensor.knx.markdown

@@ -0,0 +1,49 @@
+---
+layout: page
+title: "KNX Sensor"
+description: "Instructions on how to use the KNX Sensor with Home Assistant."
+date: 2016-08-20 22:24
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: knx.png
+ha_category: DIY
+ha_release: 0.24
+---
+
+[KNX/EIB](http://www.knx.org) integration for Home Assistant allows you to connect to a KNX bus. The component requires a local KNX/IP interface like the [Weinzierl 730](http://www.weinzierl.de/index.php/en/all-knx/knx-devices-en/knx-ip-interface-730-en). Through this it will send and receive commands to and from other devices to the KNX bus.
+
+There is currently support for the following KNX Data Point Types
+
+ - Temperature: KNX Datapoint Type 9.001 - °C - 2 Byte Float
+ - Speed(Wind Speed): KNX Datapoint Type 9.005 - m/s - 2 Byte Float
+ - Illuminance(Lux): KNX Datapoint Type 9.004 - Lux - 2 Byte Float
+
+The `knx` Component muste be Configured Correctly, see [KNX Component](/components/knx)
+
+### Sample Configuration ###
+
+```yaml
+sensor:
+  - platform: knx
+    name: knxweather_temp
+    type: temperature
+    address: 1/0/3
+
+  - platform: knx
+    name: knxweather_wind
+    type: speed_ms
+    address: 1/0/0
+
+  - platform: knx
+    name: knxweather_lux
+    type: illuminance
+    address: 1/0/1
+```
+
+### Optional Parameters: ###
+ - minimum - Minimum Sensor Value who gets processed
+ - maxmimum - Maxmimum Sensor Value who gets processed
+
+If minimum and maximum not defined, hardcoded default values are used