Added "extended mode" to optionally support Extended Code 39
Added "extended mode" to optionally support Extended Code 39

zilaiyedaren/zxing-iphone,joelind/zxing-iphone,joelind/zxing-iphone,zilaiyedaren/zxing-iphone,zilaiyedaren/zxing-iphone,joelind/zxing-iphone,zilaiyedaren/zxing-iphone,joelind/zxing-iphone,zilaiyedaren/zxing-iphone,zilaiyedaren/zxing-iphone,joelind/zxing-iphone,zilaiyedaren/zxing-iphone,joelind/zxing-iphone,joelind/zxing-iphone,zilaiyedaren/zxing-iphone,joelind/zxing-iphone