Added readme

README.md

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+# MuneBase Swerve Sim
+
+A browser-based simulator for Swerve Drive robots.
+
+Live demo: https://swerve-vis.munebase.dev
+
+
+You can host the project locally with a simple static server and open it in your browser:
+
+- Python 3 (built-in):
+
+  python3 -m http.server 8000
+
+  Then open: http://localhost:8000
+
+- Node.js (with npx):
+
+  npx http-server -c-1 .
+
+Open `index.html` from the project root in your browser if your editor provides a static preview.
+
+Notes
+
+- Third-party scripts are in the `vendor/` directory.
+
+License
+
+This repository is provided as-is.