update:docment and readme

Author: xengine-qyt

README.en.md

@@ -98,7 +98,6 @@ 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  
 Download speed limit optimization  
 
 ## other problems   

README.md

@@ -96,7 +96,6 @@ 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  
 下载限速优化  
 
 ## 其他问题