Yale Smart Alarm component docs (#6176)

* Add New Yale Smart Alarm Component Documentation

* Update Yale Alarm Documentation

source/_components/alarm_control_panel.yale_smart_alarm.markdown

@@ -0,0 +1,60 @@
+---
+layout: page
+title: "Yale Smart Alarm Control"
+description: "Instructions on how to integrate Yale Smart Alarms into Home Assistant."
+date: 2018-09-01 11:11
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Alarm
+ha_release: 0.78
+---
+
+The `yale_smart_alarm` platform provides connectivity with the Yale Smart Alarm systems and Smart Hub through Yale's API.
+
+This platform supports the following services: `alarm_arm_away`, `alarm_arm_home`, `alarm_arm_night` (duplicate of home) and `alarm_disarm`.
+Currently only one alarm is supported.
+
+
+To enable, add the following lines to your `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+alarm_control_panel:
+  - platform: yale_smart_alarm
+    username: YOUR_USERNAME
+    password: YOUR_PASSWORD
+```
+
+Configuration variables:
+
+- **name** (*Optional*): Name of device in Home Assistant.
+- **username** (*Required*): Username used to sign into the Yale app/web client.
+- **password** (*Required*): Password used to sign into the Yale app/web client.
+- **area_id** (*Optional*): Area ID of the device when talking to Yale's API if required ('1' by default).
+
+Automation example:
+
+```yaml
+automation:
+  - alias: "Alarm: Disarmed Daytime"
+    trigger:
+      platform: state
+      entity_id: alarm_control_panel.yale_smart_alarm
+      to: 'disarmed'
+    condition:
+      condition: sun
+      before: sunset
+    action:
+      service: scene.turn_on
+      entity_id: scene.OnDisarmedDaytime
+  - alias: "Alarm: Armed Away"
+    trigger:
+      platform: state
+      entity_id: alarm_control_panel.yale_smart_alarm
+      to: 'armed_away'
+    action:
+      service: scene.turn_on
+      entity_id: scene.OnArmedAway 
+```