docs: README.md

Author: johnstonmatt

README.md

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+# Deno `v2.1.5` Compile Error for Windows Target
+
+[main.ts](main.ts) is a deno script that will behave properly when compiled on MacOS and Linux, but throw an error when compiled for Windows.
+
+The issue is only present in Deno `v2.1.5` and not in `v2.1.4`.
+
+The issue is demonstrated in GitHub Actions in the [demo.yml](.github/workflows/demo.yml) file.