Update README.md

Author: willtheorangeguy

README.md

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 # ProgramVer
 An open-source, Python GUI version window to show copyright info and licenses. A Python version of Microsoft's 'winver'.
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+You can edit the code to suit your needs and can also change the logo on top.
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+`dfdlogo.gif` is Copyright © 2018 Dog Face Development Co.
+`pythonpoweredlength.gif` is Copyright © the Python Software Foundation.