Create an .env file

In this task you need to create a .env file to put your data from the binance api

1. Go to the web site api binance testnet (use just the testnet website)
2. Make an account or use the one that you already have
3. create .env file with this structure:
API_URL = " "
STREAM_URL = " "
API_KEY = " "
SECRET_KEY = " "

Start with the Binance testnet website named in the issue and review the repository's expected environment-variable loading location. Create the .env file with API_URL, STREAM_URL, API_KEY, and SECRET_KEY populated for testnet. Done means the application can read these values without exposing credentials.

Written by the indexing model from the issue text.