Update README.md

README.md

@@ -40,7 +40,14 @@ We would like to take this opportunity to thank
 
 ## Instruction format
 
-  Freed from templates. Congratulations
+  Ninja adopts the prompt format from Vicuna and supports multi-turn conversation.
+  The prompt should be as following:
+  ```
+  A chat between a curious user and an artificial intelligence assistant. The assistant gives helpful, detailed, and polite answers to the user's questions.
+  USER: Hi ASSISTANT: Hello.</s>
+  USER: Who are you?
+  ASSISTANT: I am ninja.</s>
+  ```
 
 ## Example prompts to improve (Japanese)