Fix EPS file creation

[Shane32]

@Shane32 Oops I did not notice the eps support. However when I tried to open the eps generated by PostscriptQRCode eps = true it failed to open in Illustrator CS3. It maybe legacy but eps version 3.0 should open in all CS versions and for a QRCode only a minimal set of features is needed. But I might have made a mistake?

 using (QRCodeData data = QRCodeGenerator.GenerateQrCode(link.Uri, QRCodeGenerator.ECCLevel.Q))
 {
     using (PostscriptQRCode eps = new(data))
     {
         string qrCode = eps.GetGraphic(10, true);
         //save your graphic
         using (FileStream fs = File.OpenWrite(@"PATH\qrcode.eps"))
         {
             using (StreamWriter sw = new(fs)) 
             {
                 sw.Write(qrCode);
             }
         }
     }
 }

GS1: The documentation is quite extensive and it took us writing loads of code to rectify and simplify. If you would want any pointers I'll be glad to help.

Thank you for your answer,
Kind regards Martijn

Originally posted by @mvanderelsen in #488