Added documentation for the ThingSpeak component

source/_components/thingspeak.markdown

@@ -0,0 +1,39 @@
+---
+layout: page
+title: "Thingspeak"
+description: "Record one entity in Thingspeak"
+date: 2016-10-24 15:45
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: "History"
+ha_release: 0.32
+---
+
+The `thingspeak` components makes Home Assistant communicate with the [ThingSpeak API](https://thingspeak.com/). 
+For now, it records exactly one entity at once, which is great for testing purposes. For long-time storage you should rely
+on the [InfluxDB component](https://home-assistant.io/components/influxdb/).
+
+```yaml
+# Example configuration.yaml entry
+thingspeak:
+```
+
+You will have to create a [new channel](https://thingspeak.com/channels/new) on ThingSpeak and grab your API key from your [account page](https://thingspeak.com/account). 
+
+Configuration variables:
+- **api_key**: Yout ThingSpeak API key
+- **id**: The ID of your desired ThingSpeak channel
+- **whitelist**: The name of the entity whose states should be sent to the channel.
+
+## {% linkable_title Examples %}
+
+### {% linkable_title Full configuration %}
+
+```yaml
+thingspeak:
+  api_key: MY_API_KEY
+  id: 1337
+  whitelist: sensor.yr_temperature
+```