message: gltfpack: Update README.md
  Note that basisu can be used in node builds now.
diff: @@ -26,7 +26,7 @@ When using `-c` option, gltfpack outputs compressed `.glb`/`.gltf` files that us
  For better compression, you can use `-cc` option which applies additional compression; additionally make sure that your content delivery method is configured to use deflate (gzip) - meshoptimizer codecs are designed to produce output that can be compressed further with general purpose compressors.
  -gltfpack can also compress textures using Basis Universal format, either storing .basis images directly (`-tb` flag, supported by three.js) or using KTX2 container (`-tc` flag, requires support for `KHR_image_ktx2`). Compression is performed using `basisu` executable and is thus only available in native builds.
  +gltfpack can also compress textures using Basis Universal format, either storing .basis images directly (`-tb` flag, supported by three.js) or using KTX2 container (`-tc` flag, requires support for `KHR_image_ktx2`). Compression is performed using `basisu` executable that must be available in `PATH`; alternatively the path to the executable can be specified via `BASISU_PATH` environment variable.
  When using compressed files, [js/meshopt_decoder.js](https://github.com/zeux/meshoptimizer/blob/master/js/meshopt_decoder.js) needs to be loaded to provide the WebAssembly decoder module like this:
  