Add Volvo on Call docs (#1060)

* Add initial volvooncall docs

* Replace people with cars

source/_components/device_tracker.automatic.markdown

@@ -38,4 +38,4 @@ Configuration variables:
 - **password** (*Required*): The password for your given ODB reader account.
 - **devices** (*Optional*): The list of vehicle display names you wish to track. If not provided, all vehicles will be tracked.
 
-See the [device tracker component page](/components/device_tracker/) for instructions how to configure the people to be tracked.
+See the [device tracker component page](/components/device_tracker/) for instructions how to configure the cars to be tracked.

source/_components/device_tracker.volvooncall.markdown

@@ -0,0 +1,33 @@
+---
+layout: page
+title: "Volvo On Call"
+description: "Instructions for how to integrate Volvo On Call into Home Assistant."
+date: 2016-10-02 17:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: volvo.png
+ha_category: Presence Detection
+ha_release: "0.30"
+---
+
+
+The `volvooncall` platform offers presence detection by retrieving your car's information from the [Volvo On Call](http://www.volvocars.com/intl/own/owner-info/volvo-on-call#) cloud service.
+
+To use Volvo On Call in your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+device_tracker:
+  - platform: volvooncall
+    username: username
+    password: password
+```
+
+Configuration variables:
+
+- **username** (*Required*): The username associated with your Volvo On Call account.
+- **password** (*Required*): The password for your given Volvo On Call account.
+
+See the [device tracker component page](/components/device_tracker/) for instructions how to configure the cars to be tracked.