message: Update README.md
  Use .then() in the JavaScript example to make sure WebAssembly
  compilation finishes and the module is ready before use.
diff: @@ -151,9 +151,12 @@ Due to a very high decoding performance and compatibility with general purpose l
  ```js
  var decoder = MeshoptDecoder(); // from js/decoder.js
  +// decoder is a Promise that is resolved when (asynchronous) WebAssembly compilation finishes
  +decoder.then(function () {
  // decode from *Data (Uint8Array) into *Buffer (Uint8Array)
  decoder.decodeVertexBuffer(vertexBuffer, vertexCount, vertexSize, vertexData);
  decoder.decodeIndexBuffer(indexBuffer, indexCount, indexSize, indexData);
  +});
  ```
  A THREE.js mesh loader is provided as an example in `tools/OptMeshLoader.js`; it loads meshes encoded using `tools/meshencoder.cpp`.
  