Update README.md

README.md

@@ -4,6 +4,8 @@ Audio processing by using pytorch 1D convolution network. By doing so, spectrogr
 Other GPU audio processing tools are [torchaudio](https://github.com/pytorch/audio) and [tf.signal](https://www.tensorflow.org/api_docs/python/tf/signal). But they are not using the neural network approach, and hence the Fourier basis can not be trained.
 
 The name of nnAudio comes from `torch.nn`, since most of the codes are built from `torch.nn`.
+## Documentation
+https://kinwaicheuk.github.io/nnAudio/index.html
 
 ## Reference
 [Kapre](https://www.semanticscholar.org/paper/Kapre%3A-On-GPU-Audio-Preprocessing-Layers-for-a-of-Choi-Joo/b1ad5643e5dd66fac27067b00e5c814f177483ca?citingPapersSort=is-influential#citing-papers)