Add README with badges + MIT license

Author: Dale-Black

LICENSE

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+MIT License
+
+Copyright (c) 2026 GroupTherapyOrg
+
+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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+# JavaScriptTarget.jl
+
+[![CI](https://github.com/GroupTherapyOrg/JavaScriptTarget.jl/actions/workflows/ci.yml/badge.svg)](https://github.com/GroupTherapyOrg/JavaScriptTarget.jl/actions/workflows/ci.yml)
+[![Docs](https://github.com/GroupTherapyOrg/JavaScriptTarget.jl/actions/workflows/docs.yml/badge.svg)](https://grouptherapyorg.github.io/JavaScriptTarget.jl/)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
+
+Compile Julia functions to JavaScript.
+
+```julia
+import JavaScriptTarget as JST
+
+f(x::Int32) = x * x + 1
+result = JST.compile(f, (Int32,))
+
+println(result.js)
+# function f(x) {
+#   return (Math.imul(x, x) + 1) | 0;
+# }
+```
+
+Includes a self-hosted [browser playground](https://grouptherapyorg.github.io/JavaScriptTarget.jl/) — type Julia, run it as JS, no server needed.