Install Node - mickeyr007/node-movie GitHub Wiki
Installing node.js on OSX 10.9 Mavericks
node.js allows you to run javascript in the Terminal as appose to a regular browser which makes for a modern workflow in web development, with node.js installed an associated package called npm (Node Package Manager) is also installed which can manage other applications that utilize node.js, one of the main ones being grunt.js. OSX Yosemite 10.10 guide here.
To install node.js on OSX 10.9 Mavericks you can download a pre-compiled binary package which makes a nice and easy installation. Head over to http://nodejs.org/ and click the install button to download the latest package.