import torch

`import torch` is missed in sample code.

README.md

@@ -21,6 +21,7 @@ Furthermore, it is instruction-tuned to align with natural language instructions
 This model can be easily loaded using the `AutoModelForSeq2SeqLM` functionality and employs the same tokenizer as [CodeGen](https://github.com/salesforce/CodeGen).
 
 ```python
+import torch
 from transformers import AutoModelForSeq2SeqLM, AutoTokenizer
 
 checkpoint = "Salesforce/codet5p-6b"