Add documentation for KIWI.KI smartlock (#5381)

* added documentation for KIWI.KI smartlock

* updated code review

* removed unused line

* bump ha_release to 0.72

source/_components/lock.kiwi.markdown

@@ -0,0 +1,39 @@
+---
+layout: page
+title: "KIWI Lock"
+description: "Instructions on how to integrate KIWI Smart Lock and Smart Entry."
+date: 2018-05-16 13:37
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: kiwi.png
+ha_category: Lock
+featured: false
+ha_release: 0.72
+ha_iot_class: "Cloud Polling"
+---
+
+The `KIWI` platform allows you to open your KIWI Smart Locks and Smart Entry Devices. 
+All you need to get started is a KIWI account. Register at [the KIWI website](https://kiwi.ki/login/).
+
+## {% linkable_title Configuration %}
+
+```yaml
+# Example configuration.yaml entry
+lock:
+  - platform: kiwi
+    username: mail@example.com
+    password: mySecretPassword
+```
+
+{% configuration %}
+username:
+  required: true
+  description: The username of your KIWI account.
+  type: string
+password:
+  required: true
+  description: The password of your KIWI account.
+  type: string
+{% endconfiguration %}