Update README.md

README.md

@@ -18,6 +18,10 @@ This is a **M2M100** model fine-tuned on the [**Parenthetical Terminology Transl
 
 ## Example Usage
 
+*Note: `M2M100Tokenizer` depends on `sentencepiece`, so make sure to install it before running the example.*
+
+To install `sentencepiece` run `pip install sentencepiece`
+
 Here’s how to use this fine-tuned model with the Hugging Face `transformers` library:
 ```python
 from transformers import M2M100ForConditionalGeneration, M2M100Tokenizer