An example gem that shows how to use the gem extension framework to install gems on the user's system based on the Ruby version the user has installed.
The gem_dep_example folder has the example with the proper layout and annotated code.
The other folders are the gems that will be loaded by gem_dep_example, the choice of which depends if the user has Ruby 1.9 installed or not.
The code is based on the example found in the Ruby Programming/Ruby Gems wiki book. http://en.wikibooks.org/wiki/Ruby_Programming/RubyGems
Licensed under the MIT license (see LICENSE.txt)