错误一
Updates were rejected because the remote contains work that you do
! [rejected] master -> master (fetch first)
error: failed to push some refs to 'https://github.com/icessun/baiduWebShool.git'
hint: Updates were rejected because the remote contains work that you do
hint: not have locally. This is usually caused by another repository pushing
hint: to the same ref. You may want to first integrate the remote changes
hint: (e.g., 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.
错误的原因是：远程仓库包含你本地所没有的更新，可能是被其他人推送进去，故你应该合并这些变化在你准备推送之前
解决办法：
$ git pull origin master 抓取远端的内容
$ git push origin master 重新推送到远程仓库错误二
Your local changes to the following files would be overwritten by checkout:
Administrator MINGW32 /d/blog (dev)
$ git checkout master
error: Your local changes to the following files would be overwritten by checkout:
.idea/workspace.xml
Please commit your changes or stash them before you switch branches.
Aborting
错误的原因是：直接在远程仓库包操作了，修改了github上面的东西，相当于服务器上面的东西，而本地没有修改，当想改变分支的时候，出现了改变分支的时候会重写文件，所以必须把修改的提交到版本库里面。或者是隐藏在你切换分支之前。
解决办法：
抛弃本地的修改，回到上一个版本
git reset --hard 然后，切换你的分支 git checkout master