Update README.md

You can't use pipeline without import. I just add the import package.

README.md

@@ -14,7 +14,7 @@ A100の4枚の環境がおすすめです
 
 ### Huggingface
 ```python
-from transformers import AutoTokenizer, AutoModelForCausalLM
+from transformers import AutoTokenizer, AutoModelForCausalLM, pipeline
 import torch
 
 tokenizer = AutoTokenizer.from_pretrained("lightblue/ao-karasu-72B")