xcrun: error: active developer path ("..") does not exist, use `xcode-select --switch path/to/Xcode.
来源：尔游网
今天运行命令的时候报错:
xcrun: error: active developer path ("/Users/soindy/Downloads/Xcode.app/Contents/Developer") does not exist, use `xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools (or see `man xcode-select`)
