And using msmtp gmail on Ubuntu 18.04, git-sendemail sent to the kernel patch

This is the first time I send a patch to the kernel, although only a test of the patch, but I also felt very strange, and this is one of his little progress.

Here is the school from various websites to summarize how to send the patch.

	Gmail the Create Account 1.. 
	2. ON the Install Git Ubuntu https://www.digitalocean.com/community/tutorials/how-to-install-git-on-ubuntu-18-04#setting-up-git 
	3. Modify ubuntu the default nano git commit to Vim https://blog.csdn.net/cnmilan/article/details/54709311 
	4. msmtp arranged mutt https://blog.csdn.net/junmuzi/article/details/25906185 
	. 5 generating patch, using git-send-email to send mail https://blog.51cto.com/mirage1993/1912785