If you ever wondered how to turn your Mac into a Super Mario Bros. level… because who doesn’t… now, you will learn. Screentendo is an app that lets you to turn any picture into a playable level of Super Mario Bros. The installation process is a little complicated so here is the easy way to do it. Follow this tutorial and you will have customized Super Mario Bros. levels in an instant.
Warning: Messing with your Terminal could critically damage your computer. Do it at your own risk.
You need OS X 10.10
For the Terminal
sudo gem install cocoapods