Add documentation for traccar (#7364)

* Add documentation for traccar

* Remove unused link

* Add username + password to example

* Change host description from GH to Traccar

* Clearer wording

source/_components/device_tracker.traccar.markdown

@@ -0,0 +1,63 @@
+---
+layout: page
+title: "Traccar GPS tracker"
+description: "Instructions how to use Traccar GPS tracker to track devices in Home Assistant."
+date: 2018-11-04 00:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: traccar.png
+ha_release: 0.83
+ha_category: Presence Detection
+ha_iot_class: "Local Polling"
+---
+
+`Traccar` uses GPS for tracking and has support for over 1500 different types of devices.
+
+## {% linkable_title Configuration %}
+
+To integrate Traccar GPS tracker in Home Assistant, add the following section to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+device_tracker:
+  - platform: traccar
+    host: IP_ADDRESS
+    username: USERNAME
+    password: PASSWORD
+```
+
+{% configuration %}
+host:
+  description: The DNS name or IP Address of the server running Traccar.
+  required: true
+  type: string
+username:
+  description: The username for the Traccar server.
+  required: true
+  type: string
+password:
+  description: The password for your given account on the Traccar server.
+  required: true
+  type: string
+host:
+  description: The DNS name or IP Address of the server running Traccar.
+  required: true
+  type: string
+port:
+  description: The port of your Traccar server.
+  required: false
+  default: 8082
+  type: integer
+ssl:
+  description: Use HTTPS to connect to Traccar server. *NOTE* A host *cannot* be an IP address when this option is enabled.
+  required: false
+  default: false
+  type: boolean
+verify_ssl:
+  description: Verify the certification of the system.
+  required: false
+  type: boolean
+  default: true
+{% endconfiguration %}