Update README.md

Author: deepmancer

README.md

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+**Source Code**: <a href="https://github.com/deepmancer/fastapi-auth-jwt/" target="_blank">https://github.com/deepmancer/fastapi-auth-jwt</a>
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 ## **✨ Features**
 
 - 🚀 **Effortless Integration**: Seamlessly add JWT authentication to your FastAPI application with just a few lines of code.