Create README.md

Author: zigzag1001

README.md

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+# Pixel Sorting with Rust + Wasm
+
+![image](https://github.com/user-attachments/assets/6f0be2d1-e81f-4f8a-a680-bf2f0d0c5787)
+
+## Special features
+- Arbitrary sorting angle support! (0-360°)
+- Luminance histogram!
+- ...
+- Fully static - images stay in browser!
+- ...
+- 🚀 Rust 🔥
+
+### Compiling
+1. Install rust
+2. Install wasm-pack `cargo install wasm-pack`
+3. Build with wasm-pack `wasm-pack build --target web --release --out-dir web/pkg`
+4. Everything should now be in ./web/
+5. Serve the ./web/ directory