#13 Please add GS1 Support

[Anonymous]

As described at the GS1 Homepage a GS1 Barcode start with a Start Code following by a FNC1 Code. If a add a FNC1 as first Character in a String
to print a Scanner will not recognize it as GS1 Barcode Type (wich is only a Subset from Code 21). It was very nice to have the Support for
the GS1 Standard because this is the industrial Standard for Logistik.