cocoapods错误You cannot run CocoaPods as root. (CLAide::Help)解决办法

/Library/Ruby/Gems/2.0.0/gems/claide-0.9.1/lib/claide/command.rb:417:in `help!‘: [!] You cannot run CocoaPods as root. (CLAide::Help)

Usage:

    $ pod COMMAND

      CocoaPods, the Cocoa library package manager.

Commands:

    + cache      Manipulate the CocoaPods cache
    + init       Generate a Podfile for the current directory.
    + install    Install project dependencies to Podfile.lock versions
    + ipc        Inter-process communication
    + lib        Develop pods
    + list       List pods
    + outdated   Show outdated project dependencies
    + repo       Manage spec-repositories
    + setup      Setup the CocoaPods environment
    + spec       Manage pod specs
    + update     Update outdated project dependencies and create new
                 Podfile.lock

Options:

    --silent     Show nothing
    --version    Show the version of the tool
    --verbose    Show more debugging information
    --no-ansi    Show output without ANSI codes
    --help       Show help banner of specified command
    from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.39.0/lib/cocoapods/command.rb:44:in `run‘
    from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.39.0/bin/pod:44:in `<top (required)>‘
    from /usr/local/bin/pod:23:in `load‘
    from /usr/local/bin/pod:23:in `<main>‘

$ exit

pod install