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module VitaminedGems

  class VitaminedGem
    def initialize(config)
      @config = config
    end   

    def github(name, options = {})

      options = { 
        :lib => name.split('-', 2).last,
        :source => 'http://gems.github.com'                 
      }.merge(options)

      @config.gem(name, options)
    end    
  end

  def gem_with_vitamins(*args)
    args.empty? ? VitaminedGem.new(self) : gem_without_vitamins(*args)
  end

  def self.included(base)
    base.class_eval do 
      alias :gem_without_vitamins :gem
      alias :gem :gem_with_vitamins
    end
  end
end


Rails::Configuration.class_eval do 
  include VitaminedGems
end