title: How can I use multiple Gemfiles for my application?
body: <p>I am working with a team of developers, and we are all using the same Gemfile from our repository. Because I am working on a Mac, and others are using Ubuntu, we have a Gemfile.local.example file in our repository as well that has the appropriate notification gems for each OS, all commented out.</p>
  
  <p>I un-commented the gems for my OS and saved as a new file, not in version control, Gemfile.local. Now I would like "bundle install" to install gems from both files.</p>
  
  <p>I can't find any good documentation on doing this.</p>