Update README.md

Author: antiKk

README.md

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 # muOS-Artwork
+Box art was created with Skraper using the [muOS RG35XX Box mix](https://github.com/antiKk/muOS-Artwork/blob/main/Skraper%20Mixes/muOS%20RG35XX%20Box.xml)
+
+Preview art was created with Skraper using the [muOS RG35XX Preview mix](https://github.com/antiKk/muOS-Artwork/blob/main/Skraper%20Mixes/muOS%20RG35XX%20Preview.xml)
+
+Meta text generated with Skraper and converted with [this script](https://github.com/antiKk/muOS-Artwork/blob/main/Skraper%20Mixes/convert.ps1)
+
+> [!NOTE]
+> The system icons in this set are from [here](https://github.com/Vidnez/retro-systems-icons-for-GarlicOS)
 
 ### System Art
 ![muOS_20240131_1857_0](https://github.com/antiKk/muOS-Artwork/assets/4548266/a161f8a9-8d62-4d14-8756-9222618f162d)