If you don't have a RubyMotion app yet, generate one.

$ motion create myapp
$ cd myapp

You'll need to create a Gemfile. Here we're using bubblewrap.

gem 'bubble-wrap'

Then, set up your Rakefile to require your bundled gems at compile time. Add this to the top of the file, right beneath the line `require 'motion/project'`

require 'bundler'

Bundler.require

Next, install your dependencies:

Now you can just compile your app as normal.