Change the poetry remnant in readme

README.md

@@ -41,19 +41,14 @@ Put API secrets in .env
 
 ```sh
 cp .env.example .env
-# edit .env with your secret key(s). Only OPEN_AI_KEY is required.
 ```
 
-One option is to enter the poetry environment.  
+Edit .env with your secret key(s). Only `OPEN_AI_KEY` is required.
 
-```sh
-poetry shell
-```
-
-Then start the Gradio demo.
+Then start the Gradio demo from within the virtual environment.  
 
 ```sh
-python app.py
+python3 -m chatbot.app
 ```
 
 ## Dependencies