added template and delete some debugging message

docs/template.php

@@ -0,0 +1,37 @@
+<?php
+
+class <name_of_class>
+{
+	public $hookName = <public name of the hook>;
+	public $active = true;		enable/disable hook (true => enabled)
+
+	private $devicelist = array(<ieee address or constant defined in config/devices_constants.php>) => <property of the device to watch>);
+
+	// assigne the function to the sensors devices
+	function __construct()
+	{
+		global $indexDevices;
+		if ($this->active === true)
+		{
+			foreach ($this->devicelist as $ieeeAddress => $property)
+			{
+				$indexDevices[$ieeeAddress]->$property["functions"][] = array($this,"callback");
+			}
+		}
+		// put here your code to init the class
+	}
+
+	// callback fonction. Is called with these 3 parameters
+	// $device 		-> calling device
+	// $property 	-> property of the device (given by mqtt)
+	// $value 		-> value of the property
+	public function callBack(&$device, $property, $value)
+	{
+		// here your code
+
+		logger (INFO, _("%s: notification received from MQTT from %s => parameter: %s value: %s"), $this->hookName, $device->friendlyName, $property, $value);
+	}
+}
+
+$hooks[<public name of the hook>] = new <name_of_class>();
+?>