documentation for velux component (#2958)

* documentation for velux component

* documentation for velux component - fixed problem

* Fix indent

source/_components/velux.markdown

@@ -0,0 +1,30 @@
+---
+layout: page
+title: "Velux"
+description: "Instructions on how to integrate Velux KLF 200 component with Home Assistant."
+date: 2017-07-09 12:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: velux.png
+ha_category: Hub
+ha_release: 0.49
+ha_iot_class: "Local Polling"
+---
+
+[Velux](http://www.velux.com) integration for Home Assistant allows you to connect to a Velux KLF 200 interface, to control [io-homecontrol](http://www.io-homecontrol.com)  devices like windows and blinds. The module allows you to start scenes configured within KLF 200. 
+
+A `velux` section must be present in the `configuration.yaml` file and contain the following options as required:
+
+```yaml
+# Example configuration.yaml entry
+velux:
+  host: "192.168.1.23"
+  password: "velux123"
+```
+
+Configuration variables:
+
+- **host** (*Required*): The IP address or hostname of the KLF 200 to use.
+- **password** (*Required*): The password of the KLF 200 interface.