Add niko-home-control documentation (#5137)

* Add niko-home-control documentation

* Updates

source/_components/light.niko_home_control.markdown

@@ -0,0 +1,33 @@
+---
+layout: page
+title: "Niko Home Control Light"
+description: "Instructions on how to integrate Niko Home Control lights into Home Assistant."
+date: 2018-04-08 08:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Light
+ha_iot_class: "Local Polling"
+ha_release: 0.82
+---
+
+The `niko_home_control` platform allows you to integrate your [Niko Home Control](https://www.niko.eu/enus/products/niko-home-control) into Home Assistant.
+
+## {% linkable_title Configuration %}
+
+To enable this lights, add the following lines to your `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+light:
+  - platform: niko_home_control
+    host: IP_ADDRESS
+```
+
+{% configuration %}
+host:
+  description: The IP address of the Niko Home light.
+  required: false
+  type: string
+{% endconfiguration %}