1, git inti
2, touch readme.txt
3, git status
4, git add readme.txt
5, git status
6, git commit -m "add readme.txt file"
7, repeat the abvoe steps to create LICENSE file
8, git remote add original git@github.com:andyChenHuaYing/learngit.git
9, git remote push -u origin master
0, visit github to observe the repository's change.