gistfile1.rb

mygem/lib/hola.rb=>
#!/home/user1/.rvm/rubies/ruby-1.9.3-p194/bin/ruby

class Hola
  def self.hi(language = :english)
    translator = Translator.new(language)
    translator.hi
  end
end

require_relative 'hola/translator'

puts Hola.hi(:english)


mygem/lib/hola/translator.rb=>
class Hola::Translator
  def initialize(language)
    @language = language
  end

  def hi
    case @language
    when :spanish
      "hola mundo"
    else
      "hello world"
    end
  end
end


user1@mybox:~/tempgems/mygem/lib$ ./hola.rb 
hello world