Add documentation for the new mochad platform

This commit adds documentation around the mochad and mochad switch
platforms which are added in home-assistant/home-assistant#3970

source/_components/switch.mochad.markdown

@@ -0,0 +1,32 @@
+---
+layout: page
+title: "Mochad Switch"
+description: "Instructions how to integrate X10 Mochad switches into Home Assistant."
+date: 2016-10-20 21:13
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Switch
+ha_iot_class: depends
+---
+
+The `mochad` switch platform lets you control an X10 enabled switch device.
+
+To enable this switch in your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yml entry
+switch:
+  - platform: mochad
+    devices:
+      - name: Switch A
+        address: a1
+      - name: Living Room Lamp
+        address: a5
+```
+
+Configuration variables:
+
+- **name** (*Optional*): The name of the switch. Default is: x10_switch_dev_*address*
+- **address** (*Required*): The X10 address of the switch