Enhance README Documentation for React Developer Community Kenya Website

[festus-sulumeti]

This PR updates the README.md file to provide a more detailed and structured documentation for the project. The goal is to improve onboarding for new contributors, provide clear project details, and make the repository more informative.

Changes Introduced

• Added a Project Overview with goals and technologies used.
• Included a Live Demo section with a link and potential screenshots/GIFs.
• Organized a Table of Contents for easy navigation.
• Expanded the Features list for better clarity.
• Detailed Getting Started steps, including installation and running locally.
• Enhanced Contributing Guidelines with step-by-step instructions.
• Provided a Figma Design section with a reference link.
• Added an FAQs section to address common questions.
• Updated License information and provided a direct link.
• Included Contact Information for community engagement.

Checklist

• [ ] Ensure all sections are well-structured and easy to read.
• [ ] Verify all links (live demo, Figma, contributing guide, etc.) are working correctly.
• [ ] Confirm markdown formatting follows best practices.
• [ ] Gather feedback from the community before merging.

###Related Closes: #146