解决sudo npm install -g react-native-cli 报错问题

在执行sudo npm install -g react-native-cli 命令时候，报错
npmERR! Darwin 15.5.0
npmERR!argv "/usr/local/Cellar/node/5.7.0/bin/node" "/usr/local/bin/npm" "install"
"-g" "react-native-cli"
npmERR!node v5.7.0
npmERR!npm  v3.6.0
npmERR!path /usr/local/lib/node_modules/react-native-cli
npmERR!code ENOTEMPTY
npmERR!errno -66
npmERR!syscall rename

npmERR! ENOTEMPTY: directory not empty, rename '/usr/local/lib/node_modules/react-native-cli' -> '/usr/local/lib/node_modules/.react-native-cli.DELETE'
npmERR! 
npmERR! If you need help, you may report this error at:
npmERR!     <https://github.com/npm/npm/issues>

npmERR! Please include the following file with any support request:
npmERR!     /Users/xxx/Documents/reactnative/sourcecode/npm-debug.log

解决办法：
显示系统隐藏文件
defaults write com.apple.finder AppleShowAllFiles -bool true
删除'/usr/local/lib/node_modules/.react-native-cli.DELETE'该文件