Update README.md

README.md

@@ -7,6 +7,8 @@ This is an off-the-shelf roberta-large model finetuned on WANLI, the Worker-AI C
 
 ### How to use
 ```
+from transformers import RobertaTokenizer, RobertaForSequenceClassification
+
 model = RobertaForSequenceClassification.from_pretrained('alisawuffles/roberta-large-wanli')
 tokenizer = RobertaTokenizer.from_pretrained('alisawuffles/roberta-large-wanli')