Add initial netdata docs (#1542)

source/_components/sensor.netdata.markdown

@@ -0,0 +1,44 @@
+---
+layout: page
+title: "Netdata"
+description: "Instructions how to integrate Netdata within Home Assistant."
+date: 2016-12-05 07:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: netdata.png
+ha_category: System Monitor
+ha_release: 0.35
+ha_iot_class: "Local Push"
+---
+
+
+The `netdata` sensor platform allows you to display information collected by [Netdata](http://my-netdata.io/).
+
+To add this platform to your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: netdata
+```
+
+Configuration variables:
+
+- **host** (*Optional*): The IP address or hostname of your Netdata instance. Defaults to `localhost`.
+- **port** (*Optional*): The port that the Netdata instance is running on. Defaults to `19999`.
+- **name** (*Optional*): Name of the sensor. Defaults to "Netdata".
+- **resources** (*Optional*) array: List of details to monitor. Defaults is `memory_free`.
+  - 'memory_free': Free memory
+  - 'memory_used': Used memory
+  - 'memory_cached': Cached memory
+  - 'memory_buffers': Buffered memory
+  - 'swap_free': Free swap
+  - 'swap_used': Used swap
+  - 'processes_running': Processes Running
+  - 'processes_blocked': Processes Blocked
+  - 'system_load': System Load 15 min
+  - 'system_io_in': System I/O In
+  - 'system_io_out': System I/O Out
+