Updated with License

Images:
- DogecoinAcceptedHere_5inch.png
- DogecoinAcceptedHere_5inch_QROpen.png
- DogecoinAcceptedHereLetterSize.png
- DogecoinAcceptedHereLetterSizeQROpen.png

To follow designated License file License-DogecoinAcceptHere.md

To coincide with the need of traders of dogecoin to use these signs as a
means to promote their business and allowance to modify these files to
their needs in promoting commercial trading.