Ruby on Rails Tutorial 4th Edition Gemfiles

These are the latest Gemfiles for the Ruby on Rails Tutorial (4th Ed.) by Michael Hartl. Because the files here are easier to keep up-to-date, readers of the Ruby on Rails Tutorial print edition should always use these Gemfiles in preference to the ones listed in the book.

• Gemfile for the hello app (hello_app) from Chapter 1
• Gemfile for the toy app (toy_app) from Chapter 2
• Gemfile for the sample app (sample_app) from Chapters 3–14