Added README and license

LICENSE

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+MIT License
+
+Copyright (c) 2026-present Wind-Explorer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Nekosprite
+
+### About
+
+Minuscule utility for repainting [Neko](<https://en.wikipedia.org/wiki/Neko_(software)>) sprite GIF files.
+
+> This utility is intended for use as a library for another greater project. Work in progress, stay tuned!
+
+### Samples Preview
+
+Original neko sprite file
+![oneko](./gallery/oneko.gif)
+
+Sky Blue
+![oneko-cyan](./gallery/oneko-cyan.gif)
+
+Lavender Purple
+![oneko-indigo](./gallery/oneko-indigo.gif)
+
+Beach Yellow
+![oneko-yellow](./gallery/oneko-yellow.gif)