Add more context to the README

[rftecpro-ai]

The current README is missing or lacks sufficient detail. We should expand it to include:

• Project overview — a clear description of what Gitfolio is and what problem it solves
• Getting started — step-by-step instructions on how to clone and run the project locally
• Features — a summary of the key features and functionality
• File structure — a breakdown of the main files and folders in the repo
• Contributing — guidance for anyone who wants to contribute or submit a PR
• License — clarify the license being used

A well-written README improves onboarding for new contributors and makes the project more discoverable on GitHub.