Update Readme with token retrieval instructions

Added detailed steps for obtaining tokens using get_tokens.py.

Author: ic-dev21

doc/Readme.md

@@ -10,5 +10,24 @@ Negotiation will take place and you will receive three distinct tokens:
 
 Take care not to share your tokens as they are not encrypted and contain personally identifiable information.
 
+1. Run get_tokens.py, you will be provided with a link. Either click it or copy it in your favourite browser.
+<img width="1393" height="186" alt="image" src="https://github.com/user-attachments/assets/0b9559b1-1d9a-41ae-b4bf-185a5a5c588b" />
+
+2. Login using your Hilo Credentials
+   <img width="631" height="569" alt="image" src="https://github.com/user-attachments/assets/ad7c79a7-2402-44e8-9a0b-962406b89527" />
+
+4. Once you get to this page, select the URL and copy it to clipboard
+<img width="694" height="274" alt="image" src="https://github.com/user-attachments/assets/85989069-31a3-418d-b305-1f2378432d84" />
+<img width="567" height="46" alt="image" src="https://github.com/user-attachments/assets/1d979626-6d93-46cb-aae0-50ef061a0d61" />
+
+5. Go back to get_tokens.py and press enter, you'll get all 3 tokens:
+<img width="178" height="71" alt="image" src="https://github.com/user-attachments/assets/2755488e-48a9-4751-a821-883e8c82c2cb" />
+<img width="292" height="86" alt="image" src="https://github.com/user-attachments/assets/0b05e29d-cbec-4dbc-a442-1714639a5af5" />
+<img width="292" height="86" alt="image" src="https://github.com/user-attachments/assets/c6e36a72-58fb-4b61-b443-55ce8948b682" />
+
+   
+
 # Using Postman to send payloads to devicehub or challengehub
 ## Prerequisite: you need to have your tokens on hand, they are relatively short lived so once you have them, get to connecting!
+
+