update:readme and docment

Author: xengine-qyt

README.en.md

@@ -98,7 +98,8 @@ P2P distributed download is the same as the hyper-threaded download of other dow
 
 ## now task
 P2P WAN file search and download support  
-file send use system event
+file send use system event  
+Download speed limit optimization  
 
 ## other problems   
 You can refer to the document under the docment directory. It contains API protocol and service description.  
@@ -110,6 +111,10 @@ You can refer to the document under the docment directory. It contains API proto
 3. Submit the code
 4. New Pull Request
 
+## Clean up statement
+the software will not generate any files to other directories in your system.  
+the software can achieve complete cleanup by directly delete the directory.  
+
 ## Follow us
 If you think this software is helpful to you, please give us a START
 

README.md

@@ -96,7 +96,8 @@ P2P分布式下载与其他下载工具的超线程下载一样,原理是使用H
 
 ## 当前任务
 P2P广域网文件查找与下载支持  
-文件发送使用系统事件
+文件发送使用系统事件  
+下载限速优化  
 
 ## 其他问题  
 你可以参考docment目录下的文档.里面包含了API协议和服务说明.
@@ -108,6 +109,10 @@ P2P广域网文件查找与下载支持
 3.  提交代码
 4.  新建 Pull Request  
 
+## 绿色声明
+此软件不会产生任何文件到你的系统的其他目录中.  
+此软件可通过直接删除主目录而达到完全清理目的.  
+
 ## 关注我们
 如果你觉得这个软件对你有帮助,请你给我们一个START吧