message: Update README.md
  Add a link to JS demo
diff: @@ -159,7 +159,7 @@ decoder.then(function () {
  });
  ```
  -A THREE.js mesh loader is provided as an example in `tools/OptMeshLoader.js`; it loads meshes encoded using `tools/meshencoder.cpp`.
  +A THREE.js mesh loader is provided as an example in `tools/OptMeshLoader.js`; it loads meshes encoded using `tools/meshencoder.cpp`. [Usage example](https://zeuxcg.org/meshoptimizer/demo/) is available, with source in `demo/index.html`.
  ## Triangle strip conversion
  