Update README.md

[NishantSinghF11]

📄 Description

This pull request improves the README.md by:

• ✨ Adding relevant emojis for visual appeal
• 📚 Improving section headings for readability
• ⚠️ Highlighting limited support notice clearly
• 🧪 Clarifying development status of Material Components v2

These changes make the documentation more engaging and easier to navigate for contributors and users alike.

[google-cla]

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[NishantSinghF11]

Thank you for the opportunity to contribute! 🙌
I've signed the CLA ✅ and the checks have passed.

This PR enhances the README.md for better readability and engagement:

• ✨ Added relevant emojis
• 📚 Improved section formatting
• ⚠️ Highlighted important notices more clearly

Looking forward to your feedback! 😊