初始化一个github项目

1、在github上创建一个仓库

2、关联本地已有仓库

git remote add origin https://github.com/xiaodu1993/mybatis-test.git
git push -u origin master

3、本地初始化

echo "# mybatis-test" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/xiaodu1993/mybatis-test.git
git push -u origin master