创建新分支

git checkout -b gt210-pool gt210
创建gt210-pool 基于 gt210分支

git push -u origin gt210-pooln
提交gt210代码到gt210-pool
查看分支：git branch

创建分支：git branch <name>

切换分支：git checkout <name>

创建+切换分支：git checkout -b <name>

合并某分支到当前分支：git merge <name>

删除分支：git branch -d <name>