Update README.md

sdks/python-client/README.md

@@ -3,6 +3,14 @@ A LangGenius App Service-API Client, using for build a webapp by request Service
 
 ## Usage
 
+First, install `langgenius-client` python sdk package:
+
+```
+pip install langgenius-client
+```
+
+Write your code with sdk:
+
 ```
 api_key = "your_api_key"
 
@@ -31,4 +39,4 @@ print(conversations)
 # Rename Conversation using ChatClient
 rename_conversation_response = chat_client.rename_conversation(conversation_id="conversation_id", name="new_name", user="user_id")
 print(rename_conversation_response)
-```
+```