Documentation for linksys_ap device tracker (#1600)

* Documentation for linksys_ap device tracker

* Update device_tracker.linksys_ap.markdown

* Update device_tracker.linksys_ap.markdown

* Update device_tracker.linksys_ap.markdown

source/_components/device_tracker.linksys_ap.markdown

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+---
+layout: page
+title: "Linksys Access Points"
+description: "Instructions how to integrate Linksys Access Points into Home Assistant."
+date: 2016-12-16 01:40
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Presence Detection
+featured: false
+ha_release: 0.37
+---
+
+The `linksys_ap` platform offers presence detection by looking at connected devices to a Linksys based access point.
+It was tested with a LAPAC1750 AC1750 Dual Band Access Point.
+
+To use a Linksys Access Point in your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+device_tracker:
+  - platform: linksys_ap
+    host: 192.168.1.1
+    username: admin
+    password: password
+```
+
+Configuration variables:
+
+- **host** (*Required*): The hostname or IP address of your access point, eg. `192.168.1.1`.
+- **username** (*Required*: The username of an user with administrative privileges (read-only is sufficient).
+- **password** (*Required*): The password for your given admin account.
+- **verify_ssl** (*Optional*): Verify SSL certificate for https request. Defaults to true.
+
+Example for all configuration options:
+```yaml
+# Example configuration.yaml entry
+device_tracker:
+  - platform: linksys_ap
+    host: 192.168.1.1
+    username: admin
+    password: password
+    verify_ssl: true
+    scan_interval: 6
+    consider_home: 12
+```
+
+See the [device tracker component page](/components/device_tracker/) for instructions how to configure the people to be tracked.