samples/zig-sample/README.md

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+### Build and run
+Zig version `0.11.0` or greater is required for this sample. To build and run:
+```
+orca dev build-runtime
+zig build run
+```
+
+These two commands build the runtime - the native host executable - and the sample as a loadable wasm library, then runs it. To only build the sample without running it, use `zig build bundle`.
+
+### Warning
+Zig integration is still in-progress and experimental. You may encounter bugs since not all the bound APIs have been tested extensively - this sample is currently the only code doing so! Additionally, not all APIs have zig coverage yet, notably:
+* `oc_str8`, `oc_str16`, `oc_str32`: partial coverage
+* `oc_ui`: none
+* `gles`: none
+
+Please report any bugs you find on the Handmade discord in the #orca channel.