1.本地项目文件夹下初始化git项目
git init
2.为本地项目添加别名为 origin 地址为git@github.com:williamvittso/.....的远端仓库
git remote add origin git@github.com:williamvittso/.....
3.推送
git push -u origin master
如果你远端仓库不是空的此处可能会报错需要：
git pull
然后你可能会看到
There is no tracking information for the current branch.
Please specify which branch you want to merge with.
See git-pull(1) for details.
git pull <remote> <branch>
If you wish to set tracking information for this branch you can do so with:
git branch --set-upstream-to=origin/<branch> master
总的意思是当前本地的分支没有关联远端的分支，
需要手动指定：git pull <remote> <branch>
或者干脆设置成永久的： git branch --set-upstream-to=origin/<branch> master
然后你可能看到本地git拒绝拉取
! [rejected] master -> master (non-fast-forward)
error: failed to push some refs to 'git@github.com:williamvittso/timestamp.git'
原因是：
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Integrate the remote changes (e.g.
hint: 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.
没关系强制拉取一下就好（前提是远端分支文件不会影响到你本地的代码）
git pull --allow-unrelated-histories
