Update README.md

README.md

@@ -26,9 +26,14 @@ Now, the peft adapter can be loaded and activated like this:
 
 ```python
 from peft import PeftModel, PeftConfig
-from transformers import AutoModelForSequenceClassification
-
-model = AutoModelForSequenceClassification.from_pretrained("roberta-base")
+from transformers import AutoModelForSequenceClassification, RobertaConfig
+
+config = RobertaConfig.from_pretrained(
+    "roberta-base",
+    num_labels=2,
+    id2label={ 0: "👎", 1: "👍"}
+)
+model = AutoModelForSequenceClassification.from_pretrained("roberta-base", config=config)
 model = PeftModel.from_pretrained(model, "solwol/roberta-sentiment-classifier-peft")
 ```