Update README.md

README.md

@@ -2,4 +2,10 @@ For downloading data, please refer to `download.py`.
 
 For generating training data, please refer to `generate_training_data.py`.
 
-For loading data in `shar` format, you can refer to this [notebook](https://colab.research.google.com/github/lhotse-speech/lhotse/blob/master/examples/04-lhotse-shar.ipynb).
+For loading data in `shar` format, you can refer to this [notebook](https://colab.research.google.com/github/lhotse-speech/lhotse/blob/master/examples/04-lhotse-shar.ipynb).
+
+
+The training set consists of all data except the dev/test sets and the doreco dataset.
+The test set consists of the test sets from librispeech, aishell, mls, and the whole doreco dataset.
+
+Note that the license of `magicdata` does not allow us to redistribute the data and does not permit commercial use.