- Homescreen widget for android added

lib/Utils/currency_utils.dart

@@ -2,6 +2,9 @@ extension CurrencyExtension on String {
   /// Convert currency string into currency code
   /// eg. "AUD - Australian Dollar" to "AUD"
   String getCurrencyCode(){
+    if (length == 3) {
+      return this;
+    }
     return substring(0,3);
   }
 }