Minimizing of the configuration sample (#1008)

source/_components/binary_sensor.mqtt.markdown

@@ -10,6 +10,7 @@ footer: true
 logo: mqtt.png
 ha_category: Binary Sensor
 ha_release: 0.9
+ha_iot_class: "Depends"
 ---
 
 
@@ -20,14 +21,8 @@ To use your MQTT binary sensor in your installation, add the following to your `
 ```yaml
 # Example configuration.yml entry
 binary_sensor:
-  platform: mqtt
-  state_topic: "home-assistant/window/contact"
-  name: "MQTT Sensor"
-  qos: 0
-  payload_on: "ON"
-  payload_off: "OFF"
-  sensor_class: opening
-  value_template: '{% raw %}{{ value.x }}{% endraw %}'
+  - platform: mqtt
+    state_topic: "home-assistant/window/contact"
 ```
 
 Configuration variables:
@@ -40,9 +35,24 @@ Configuration variables:
 - **sensor_class** (*Optional*): The [type/class](/components/binary_sensor/) of the sensor to set the icon in the frontend.
 - **value_template** (*Optional*): Defines a [template](/topics/templating/) to extract a value from the payload.
 
-For a quick check you can use the commandline tools shipped with `mosquitto` to send MQTT messages. Set the state of your sensor manually:
+For a quick check you can use the commandline tools shipped with `mosquitto` to send MQTT messages. Set the state of a sensor manually:
 
 ```bash
 $  mosquitto_pub -h 127.0.0.1 -t home-assistant/window/contact -m "OFF"
 ```
 
+An extended configuration for the same sensor could look like this if you want/need to be more specific.
+
+```yaml
+# Example configuration.yml entry
+binary_sensor:
+  platform: mqtt
+  state_topic: "home-assistant/window/contact"
+  name: "Windows contact"
+  qos: 0
+  payload_on: "1"
+  payload_off: "0"
+  sensor_class: opening
+  value_template: '{% raw %}{{ value.x }}{% endraw %}'
+```
+