Update README.md

README.md

@@ -1,49 +1,55 @@
 # LoRa-mqtt
 
-## 使用案例 - 使用回调函数
+[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2FIoTcat%2FLoRa-mqtt.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2FIoTcat%2FLoRa-mqtt?ref=badge_shield)
+![size](https://badge-size.herokuapp.com/iotcat/LoRa-mqtt/master/lora-mqtt.h)
+ 
+Use MQTT in LoRa communicationg..
+
+[简体中文](./zh.md)
+
+## Usage - with Callback Functions
 ```C++
 
-#define LORA_SOCKET_IP "1.0.0.1" //需唯一
+#define LORA_SOCKET_IP "1.0.0.1" //need to be unique
 
 #include "lora-mqtt.h"
 
 LoRaMQTT mqtt;
 
 void setup(){
-    mqtt.ini(); //初始化
-    mqtt.onReceived(doIfRec); //注册回调函数，当接收到新消息时触发
-    mqtt.subscribe("主题名称"); //订阅mqtt主题
+    mqtt.ini(); //initalization
+    mqtt.onReceived(doIfRec); //register callback functions which will be executed when received message
+    mqtt.subscribe("Subject"); //subscribe MQTT subject
 }
 
 void doIfRec(String subject, String content){
-    //当收到新消息时执行这个函数中的内容
+    //When received message this function will be executed.
     
-    mqtt.publish("主题", "内容"); //发布mqtt消息
+    mqtt.publish("Subject", "Content"); //publish a mqtt message
 }
 
 void loop(){
-    //注意loop()全局不得有delay，否则会导致接收不稳定
-    mqtt.core(); //循环组件
+    //No delay() could be used in loop()
+    mqtt.core(); //Mqtt service core
 }
 
-
 ```
-## 使用案例 - 使用条件触发
+## Usage - with If in loop()
 ```C++
 
-#define LORA_SOCKET_IP "1.0.0.1" //需唯一
+#define LORA_SOCKET_IP "1.0.0.1" //need to be unique
 
 #include "lora-mqtt.h"
 
 LoRaMQTT mqtt;
 
 void setup(){
-    mqtt.ini(); //初始化
-    mqtt.subscribe("主题名称"); //订阅mqtt主题
+    mqtt.ini(); //initalization
+    mqtt.subscribe("Subject"); //subscribe MQTT subject
 }
 
 void loop(){
-    //注意loop()全局不得有delay，否则会导致接收不稳定
+    //When received message this function will be executed.
     
     if(mqtt.isNewMsg()){
         String subject, content;
@@ -51,9 +57,8 @@ void loop(){
         Serial.println(subject, content);
     }
     
-    mqtt.core(); //循环组件
+    mqtt.core(); //Mqtt service core
 }
 
-
-
 ```
+