parsing currencies from two pages(www.ingbank.pl/kursy-walut and www.kantor-exchange.pl) in PLN, generating html with table of them
create instance of class Currency with name of bank(ING or Kantor)
ing = Currency.new('ING') #--> CurrencyNext use method named with code of currency to this instance
ing.eur #--> Hash
ing.USD['buying'] #--> Float
kantor = Currency.new('Kantor') #--> Currency
kantor.gbp['selling'] #--> Float