Update readme.md

[Kevin7744]

Pull Request: README Enhancement

Description

This pull request enhances the README for the Langchain Ask PDF project to provide a clearer and more informative guide for users. The changes aim to improve the overall understanding of the project, its functionality, and the steps involved in setting it up.

Changes Made

• Introduction: Clarified the purpose of the Langchain Ask PDF application.
• Tutorial Section: Added a reference to the step-by-step video tutorial on YouTube for a more comprehensive understanding.
• How It Works: Streamlined the explanation of the application's functionality, highlighting key steps.
• Installation Section: Provided detailed instructions for cloning the repository, installing requirements, and adding the OpenAI API key.
• Usage Section: Clarified how to run the application using the Streamlit CLI.
• Contributing Section: Emphasized that the repository is for educational purposes and not intended for further contributions.

Why This Matters

Improving the README is essential for enhancing the project's accessibility. A well-documented project encourages users to try the application and provides a clear path for their journey. This update aims to make it easier for users to understand, install, and use the Langchain Ask PDF application.

How to Verify

1. Review the updated README to ensure clarity and completeness.
2. Confirm that all placeholders are replaced with actual content.
3. Ensure that the provided tutorial link directs users to the associated YouTube video.

Additional Notes

Your feedback on these enhancements is highly appreciated. Feel free to suggest further improvements or ask for clarifications if needed.

Thank you for your attention to this matter!