improvements: updated the UI to clear after 1m, added download QR option

[Ejay02]

Describe your change:

• [x] Add a Project?
• [x ] Fix a bug or typo in an existing Projects?
• [x ] Documentation change?

Checklist:

• [x ] I have read CONTRIBUTING.md.
• [ x] This pull request is all my own work -- I have not plagiarized.
• [x ] I know that pull requests will not be merged if they fail the automated tests.
• [x ] This PR only changes one Project folder. To ease review, please open separate PRs for separate algorithms.
• [x ] All new Project files are placed inside an existing directory.
• [ x] If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: "Fixes #ISSUE-NUMBER".
• [x ] My code follows the style guidelines of this project
• [x ] I have performed a self-review of my own code
• [x ] I have commented my code, particularly in hard-to-understand areas
• [x ] My changes generate no new warnings
• [x ] The title of my pull request is a short description of the requested changes.
• [x ] I have made corresponding changes to the documentation
• [x ] My PR needs documentation change

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Pull Request Report

Hey there! I've created a report for the pull request. Let's dive in!

Changes

1. Added a step to download the QR Code file in the README.md file.
2. Updated the UI in index.html to display "Enter Text" instead of "Enter text or URL" and allow entering numbers as well.
3. Changed the button text in index.html to "⚡Generate QR Code".
4. Added functionality to change the button text to "Download" and add a download function in index.js.
5. Added functionality to clear the QR code and input field after 2 minutes in index.js.

Suggestions

1. It would be helpful to provide a brief description of the changes made in the commit messages for better understanding.

Bugs

1. No bugs found.

Improvements

1. Consider using more descriptive variable names in index.js for better readability.
2. Add comments to explain the purpose of each function and section of code in index.js.

Rating

I would rate the code a 7 out of 10. The code is generally readable and performs well. However, there is room for improvement in terms of variable naming and code documentation.

That's it for the report! Let me know if you need any further assistance. Have a great day!