新的项目的提交

touch README.md

git init

git add README.md

git commit -m "first commit"

git remote add origin https://github.com/sailrancho/test.git

git push -u origin master

旧项目的提交

git remote add origin https://github.com/sailrancho/test.git

git pull origin master

git add .*

git commit -m "edit commit"

修改对应内容（或者直接覆盖）
git push -u origin master