Add support for recommending cross currency options for winners. #23
Description
So what if some of the top or bottom currencies do not have any matching pairs? Well a transaction can still be possible with a cross-currency transaction. Usually the USD or the EUR is used as the "glue" for combining two currencies that do not have a pair of their own. We need to add support so our winner chart shows these options.
Learn more about cross-currency trades here: http://www.investopedia.com/terms/c/cross-currency-transaction.asp