从头创建一个Git项目

从命令行创建一个仓库

touch README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/**/**.git
git push -u origin master

从命令行推送已经创建的仓库

git remote add origin https://github.com/**/**.git
git push -u origin master