[NodeJS] ngrok command not found in MacOSX

# vi .zshrc

alias ngrok="/usr/local/lib/node_modules/node/lib/node_modules/node/lib/node_modules/ngrok/bin/ngrok"

[출처]

https://stackoverflow.com/questions/30188582/ngrok-command-not-found

https://github.com/bubenshchykov/ngrok