Update README.md

Add versions to the example.

README.md

@@ -35,7 +35,7 @@ Nikola Ljubešić, Danijel Koržinek, Peter Rupnik, Ivo-Pavao Jazbec. ParlaSpeec
 
 ## Usage in `transformers`
 
-So far untested use from before:
+Tested with `transformers==4.18.0`, `torch==1.11.0`, and `SoundFile==0.10.3.post1`.
 
 ```python
 from transformers import Wav2Vec2ProcessorWithLM, Wav2Vec2ForCTC