I\'m trying to install ngrok (which I\'ve been using for a while on Windows with no issues) on my 1 week old yosemite and these are the steps I\'ve followed so
With Homebrew already installed on your Mac, you can easily install ngrok from the terminal, using this command:
$ brew cask install ngrok
Then run it from the shell using this command:
$ ngrok http 8000
With this command, you're telling ngrok to basically create a tunnel to your localhost 8000 and assign an internet name host for it. And thats it. You should be good to go.