OpenStruct-based Configuration Class

configuration.rb

class Configuration < OpenStruct
  def self.configure(&block)
    yield config
  end

  def self.config
    @_configuration ||= new
  end

  def method_missing(method, *args)
    if method =~ /\?\Z/
      !!self[method[0..-2]]
    else
      super
    end
  end
end