chore(Documentation): Updated readme.md to talk about the playground.

README.md

@@ -101,6 +101,9 @@ You are now ready to start using the package..
 
 #### Documentation with Examples:
 
+To see how it works I have created some routes `/sidekick/playground` so you can see the routes in action. 
+In order to use them you need to set `SIDEKICK_OPENAI_TOKEN` inside the `.env` and migrated the databases.
+
 > [!NOTE]  
 > Quick note on error handling. Currently if there is an error it is printed as the AI responds. I will be updating
 > this over the next few days to be uniformed so that all errors are presented in tha same way regardless of AI driver/model