create a new repository on the command line的时候 在终端输入命令
一直提示
xcode-select: note: no developer tools were found at '/Applications/Xcode.app', requesting install. Choose an option in the dialog to download the command line developer tools.提示安装xcode
xcode内置了某些开发需要的环境，即便不用，也建议安装。
应该不是提示你装Xcode，应该是装Command Line Tools，你单独装一个就行了