在运行R脚本的时候，出现报错，提示CMplot这个包连接超时。
Error in file(filename, "r", encoding = encoding) : cannot open the connection to 'https://raw.githubusercontent.com/YinLi...
在运行R脚本的时候，出现报错，提示CMplot这个包连接超时。
Error in file(filename, "r", encoding = encoding) :
cannot open the connection to 'https://raw.githubusercontent.com/YinLiLin/R-CMplot/master/R/CMplot.r'
Calls: source -> file
In addition: Warning message:
In file(filename, "r", encoding = encoding) :
URL 'https://raw.githubusercontent.com/YinLiLin/R-CMplot/master/R/CMplot.r': Timeout of 60 seconds was reached
Execution halted
多次运行一直没跑过去，可能就是网络信号不太好，过一段时间后就可以跑通了。
