Update README.md

Add some description of its limitation.

README.md

@@ -37,15 +37,15 @@ It achieves the following results on the evaluation set:
 
 ## Model description
 
-More information needed
+The model was fine-tuned on both encoder-decoder of transformer-based.
 
 ## Intended uses & limitations
 
-More information needed
+The training data is limited, thus the performance is also limited to only reading speech and a limited domain (tourism).
 
 ## Training and evaluation data
 
-More information needed
+The training and evaluation data was split in a 9:1 ratio from Google Text-to-speech corpus.
 
 ## Training procedure