Adds Switchmate documentation (#6031)

* Create switch.switchmate.markdown

* Add switchmate logo

* Update switch.switchmate.markdown

* Update switch.switchmate.markdown

* Update switch.switchmate.markdown

* Update switch.switchmate.markdown

* Update switch.switchmate.markdown

* Update switch.switchmate.markdown

* ✏️ Typo fix

source/_components/switch.switchmate.markdown

@@ -0,0 +1,36 @@
+---
+layout: page
+title: "Switchmate"
+description: "Instructions on how to set up Switchmate switches."
+date: 2018-08-17 22:41
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: switchmate-logo-rgb.png
+ha_category: Switch
+ha_release: 0.78
+ha_iot_class: "Local Polling"
+---
+
+This `Switchmate` switch platform allows you to control Switchmate [devices]( https://www.mysimplysmarthome.com/products/switchmate-switches/).
+
+To enable it, add the following lines to your `configuration.yaml`:
+
+```yaml
+switch:
+  - platform: switchmate
+    mac: 'cb:25:0b......'
+```
+
+{% configuration %}
+mac:
+  description: Device MAC address.
+  required: true
+  type: string
+name:
+  description: The name used to display the switch in the frontend.
+  required: false
+  type: string 
+{% endconfiguration %}
+