DestinationName in open() prototype

It implements DestinationName in pdfMake.createPdf(docDefinition).open(DestinationName);
its open the pdf document in a iframe or a frame, otherwise in a popup window _blank
For testing remember to put the iframe or a frame BEFORE the pdfMake.createPdf(docDefinition).open(DestinationName);
thanks for this Great Lib!
tocado157