How to Set Up Bundler for Development
1. Fork Bundler
Go to the Bundler Github https://github.com/bundler/bundler
Press the fork button.
Fork Bundler so you can create pull requests with your changes
2. Download a copy of your fork of Bundler
3. Change into the Bundler directory
4. Configure the remote
This connects your local repo to the upstream repo at Github.
5. Install Bundler development dependencies
What is rake? http://rake.rubyforge.org/
6. Run the Bundler test suite
This could take about 15 minutes.