添加第三方库说明

DWeChatRobot/mongoose/README.md

+# 注意  
+此处源码来自以下仓库：  
+[mongoose](https://github.com/cesanta/mongoose)  
+
+需要自行克隆该仓库并将mongoose.c和mongoose.h拷贝到此处  
+
+# Thanks  
+[mongoose](https://github.com/cesanta/mongoose)
\ No newline at end of file

DWeChatRobot/wxsocket.cpp

 #include "pch.h"
 
 #ifdef USE_SOCKET
-// mongoose: https://github.com/Automattic/mongoose
+// mongoose: https://github.com/cesanta/mongoose
 #include "mongoose/mongoose.c"
 #include<thread>
 static struct mg_mgr mgr;

DWeChatRobot/wxsocketapi.h

 #pragma once
 #ifdef USE_SOCKET
 #include <signal.h>
-// mongoose: https://github.com/Automattic/mongoose
+// mongoose: https://github.com/cesanta/mongoose
 #include "mongoose/mongoose.h"
 #pragma comment(lib,"ws2_32.lib")
 extern "C" __declspec(dllexport) void HttpStart();