Add suport for anothers currencys

[LinconEduardo]

nice job done with the aplication, but its needs more currences, i made a list with the more used:

• Australian Dollar (AUD)
• Brazilian Real (BRL)
• British Pound (GBP)
• Canadian Dollar (CAD)
• Chilean Peso (CLP)
• Chinese Yuan (CNY)
• Danish Krone (DKK)
• Hong Kong Dollar (HKD)
• Indian Rupee (INR)
• Icelandic Króna (ISK)
• Japanese Yen (JPY)
• New Zealand Dollar (NZD)
• Polish Zloty (PLN)
• Russian Ruble (RUB)
• Singapore Dollar (SGD)
• Thailand Baht (THB)