Update README.md

TheDigitalEagle · web-flow · commit fd133bdf606a · 2017-07-24T16:13:18.000-06:00
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 # Image-2-ZPL
-Converts BMP, JPG, and PNG images into a ZPLII strings for printing on Zebra printers without uploading an image to the printer.
+.NET Library that converts BMP, JPG, and PNG images into a ZPLII strings for printing on Zebra printers without uploading an image to the printer.
+
+For testing without a Zebra printer, use this site for testing your ZPL markup. http://labelary.com/viewer.html
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+
