diff --git a/README.md b/README.md
index 032689d..e9f4353 100755
--- a/README.md
+++ b/README.md
@@ -7,15 +7,15 @@ This project is a set of PHP Classes working with [libcoap](https://github.com/o
     * Remote Controls
     * Motion Sensors
   * Groups
-  * Moods / Scenes
 * Querying the status of the items 
   * On/Off
   * Brightness
   * Battery level
   * Names
 * Turning lights and groups on and off
-* Setting their brightness
-* Activating moods
+* Gateway Functions
+  * Querying the Status informations
+  * Reboot
 ## Requirements
 * IKEA Trådfri Gateway
 * PHP7 (with minor adjustments older versions can also be used)
@@ -23,6 +23,9 @@ This project is a set of PHP Classes working with [libcoap](https://github.com/o
 ## Installation
 1. Install coap-client with DTLS support. Preferrably, debug output from [tinydtls](https://projects.eclipse.org/projects/iot.tinydtls) should be disabled (otherwise adjustments in the scripts are required, see inside list.php for details on this). The script [install-coap-client.sh](https://github.com/ggravlingen/pytradfri/blob/master/script/install-coap-client.sh) from the [pytradfri](https://github.com/ggravlingen/pytradfri) repository automates this.
 2. Place the scripts in a web server directory accessible to web browsers. Ensure executing processes on the command line is allowed in your PHP installation.
-3. Provide a configuration file with IP address of the gateway, identity and key ("username and password") to use when communicating with the gateway.
 ## Configuration
-Configure Tradfri Gateway IP, User, Key in general.php
+While creating an object in your code, you must provide the parameters for user, secretkey and IP Address
+Example:
+```
+$groups = new tradfrigroups("<user>", "<secret>", "<ip>");
+```
diff --git a/Release-Notes.md b/Release-Notes.md
new file mode 100644
index 0000000..84c82bc
--- /dev/null
+++ b/Release-Notes.md
@@ -0,0 +1,28 @@
+# phpTradfri - Version History
+## Version 2.1
+* Add Subclass for Trådfri Gateway
+* defines.php
+  + defines for gateway
+* general.php
+  * extend function action() for Gateway Class (reboot command has no payload to transmit)
+* include.php
+  + add gateway.php for including gateway Sublcass
+* ReadMe
+  + Gateway functions
+* Release Notes
+  * create Release Notes
+## Version 2.0 - 11th Sep 2019
+* general.php
+  * Move from Constants to Parameters for Gateway Config
+  * to initialize new object parameters User, Secret and Gateway IP must enterd. Example:
+```
+$groups = new tradfrigroups("<user>", "<secret>", "<ip>");
+```
+  * cleaning up file
+* Update ReadMe File
+## Version 1.1 - 09th Sep 2019
+* devices
+  + Output of Firmware Version at statusremotecontrol()
+  + Add Motion Sensor to statusremotecontrol()
+## Version 1.0 - 30th Aug 2019
+* Initial Commit
\ No newline at end of file
diff --git a/defines.php b/defines.php
index 4c2813c..2911327 100755
--- a/defines.php
+++ b/defines.php
@@ -21,5 +21,10 @@
 define('TYPE_MOTION_SENSOR', 4);	//5750 = 4 => Motion Sensor
 define('GATEWAY', 15011);
 define('GATEWAY_NTP', 9023);
+define('GATEWAY_FIRMWARE', 9029);
+define('GATEWAY_ALEXA_STATUS', 9093)
+define('GATEWAY_GOOGLE_STATUS', 9105);
+define('GATEWAY_TIME_UNIX', 9059);
+define('GATEWAY_SETUP_TIME', 9069)
 
 ?>
diff --git a/gateway.php b/gateway.php
new file mode 100644
index 0000000..5bcf22e
--- /dev/null
+++ b/gateway.php
@@ -0,0 +1,28 @@
+<?php
+
+require_once('general.php');
+
+class tradfrigateway extends tradfri
+	{
+
+		function reboot(){
+
+			$this->action("post", "", "15011/9030");
+
+			// Response
+			// v:1 t:CON c:POST i:3bb9 {} [ ]
+			// decrypt_verify(): found 24 bytes cleartext
+			// decrypt_verify(): found 4 bytes cleartext
+			
+		}
+
+		function statusgateway(){
+
+			$details = $this->getDetails(GATEWAY."/15012");
+
+			$output = array('setup' => $details[GATEWAY_SETUP_TIME], 'ntp' => $details['GATEWAY_NTP'], 'time' => $details[GATEWAY_TIME_UNIX], 'firmware' => $details[GATEWAY_FIRMWARE], 'alexa' => $details[GATEWAY_ALEXA_STATUS], 'google' => $details[GATEWAY_GOOGLE_STATUS]);
+		}
+
+	}
+
+?>
\ No newline at end of file
diff --git a/general.php b/general.php
index 7982b1e..323a843 100644
--- a/general.php
+++ b/general.php
@@ -38,7 +38,11 @@ function query($path){
 		}
 
 	function action($method, $payload, $path){
-		$cmd = "coap-client -m {$method} -u '{$this->gateway['user']}' -k '{$this->gateway['secretkey']}' -e '{$payload}' 'coaps://{$this->gateway['ip']}:5684/{$path}'";
+		if($payload != "")
+			$cmd = "coap-client -m {$method} -u '{$this->gateway['user']}' -k '{$this->gateway['secretkey']}' -e '{$payload}' 'coaps://{$this->gateway['ip']}:5684/{$path}'";
+		else
+			$cmd = "coap-client -m {$method} -u '{$this->gateway['user']}' -k '{$this->gateway['secretkey']}' 'coaps://{$this->gateway['ip']}:5684/{$path}'";
+
 		exec($cmd);
 
 		}
diff --git a/include.php b/include.php
index 9f0f04f..371c45a 100644
--- a/include.php
+++ b/include.php
@@ -1,6 +1,7 @@
 <?php
 
 require_once('devices.php');
+require_once('gateway.php');
 require_once('groups.php');
 
 ?>