Update README.md

README.md

@@ -80,7 +80,8 @@ print("Response:", output_text[0][len(prompt):])
 ```
 
 # Serving with vllm
-First install vllm nightly:
+
+Need to install vllm nightly to get some recent changes:
 ```
 pip install vllm --pre --extra-index-url https://wheels.vllm.ai/nightly
 ```