These instructions have been supplanted by an automated, scripted installer, which lives here:
https://github.com/mikepurvis/ros-install-osx
Please try it out, and file bugs as required. Feel free to browse past versions of this gist as a historical curiosity, but I won't be monitoring or supporting it any more.
@soulslicer This recipe is using brewed Python; those paths only exist assuming you have installed Python using Homebrew, and that your Homebrew install is in the standard location.