Update README.md

Author: jzzoo

README.md

@@ -1,28 +1,50 @@
-# laravel-mqtt
+# laravel-mqttx
 
 A simple Laravel MQTT client provides Publish/Subscribe methods.
 
-Source code is mainly based on [phpMQTT](https://github.com/bluerhinos/phpMQTT)
+Source code is mainly based on [phpMQTT](https://github.com/bluerhinos/phpMQTT).
 
 Once the configuration is complete, it is ready to use.
 
-The install ``composer require jzzoo/laravel-mqttx``
+## install 
 
 
+```php
+$ composer require jzzoo/laravel-mqttx -vvv
+$ php artisan vendor:publish
+```
+
+## config
+
+config/mqttx.php
 
-Example: 
+```php
+return [
+    'host'     => env('mqtt_host','127.0.0.1'),
+    'password' => env('mqtt_password',''),
+    'username' => env('mqtt_username',''),
+    'certfile' => env('mqtt_cert_file',''),
+    'port'     => env('mqtt_port','1883'),
+    'debug'    => env('mqtt_debug',false),
+    'qos'      => env('mqtt_qos', 0),
+    'retain'   => env('mqtt_retain', 0)
+];
+```
+
+## example: 
 ```php
 
 
 $mqtt = new Mqttx();
 
-// 发布
-$mqtt->Publish('test/demo', sprintf("mqtt message: ", mt_rand(10,9999)));
+// Post news to test/topic topic
+$mqtt->Publish('test/topic', sprintf("mqtt message: ", mt_rand(10,9999)));
+   
 
-// 订阅        
-$mqtt->Subscribe('test/demo', function ($topic, $message){
+// Subscribe to test/topic topic       
+$mqtt->Subscribe('test/topic', function ($topic, $message) {
     dump($topic);
     dump($message);
 });
 
-```
+```