Add Nvidia licenses link to README.md (meta-pytorch#270)

Author: ahmadsharif1

README.md

@@ -212,3 +212,10 @@ guide](CONTRIBUTING.md) for more details.
 ## License
 
 TorchCodec is released under the [BSD 3 license](./LICENSE).
+
+However, TorchCodec may be used with code not written by Meta which may be
+distributed under different licenses.
+
+For example, if you build TorchCodec with ENABLE_CUDA=1 or use the CUDA-enabled
+release of torchcodec, please review CUDA's license here:
+[Nvidia licenses](https://docs.nvidia.com/cuda/eula/index.html).