Tokaido installs Rails as a Mac OS X application. Working copies of Ruby, Rubygems, Rails and all necessary gems are installed into the user's system, available from the Terminal.
If you get a warning about the app not being loaded because it is from an unknown developer:
You can fix this by following the directions under "How to open an app from a unidentified developer and exempt it from Gatekeeper" here.
When first cloning this repo, be sure to run the following:
gem install cocoapods
pod install
Scripts/package.sh
open Tokaido.xcworkspace
You should then be able to build and run Tokaido in Xcode.