🔧 Update README.md of Rock-Paper-Scissors #143

I've undertaken a comprehensive overhaul of the README.md file for the Rock-Paper-Scissors game project to elevate documentation standards and enhance the overall developer experience. As a full-stack developer with extensive experience in project documentation, I recognize the critical role that well-structured documentation plays in project sustainability and community engagement.

Key Improvements Delivered:
📖 Complete Project Documentation: Implemented detailed installation guides, comprehensive game rules, and clear usage instructions
🔧 Technical Architecture: Documented the complete code structure, core JavaScript functions, and technology implementation
🤝 Contributor Ecosystem: Established streamlined contribution guidelines to facilitate community involvement
🎨 Professional Presentation: Applied advanced markdown formatting with strategic use of badges, visual elements, and organized sections
📱 Universal Accessibility: Ensured documentation optimization for all viewing platforms and devices

Technical Documentation Enhancements:
Comprehensive breakdown of all core JavaScript functions (getComputerChoice, getResult, showResult, onClickRPS, playGame, endGame)
Clear project hierarchy and file organization schema
Detailed feature catalog with intuitive visual indicators
Multi-environment setup instructions (Direct Download, Git Clone, Live Server)

Professional Initiative Statement
Although this specific issue (#143) wasn't formally assigned to me, I identified a significant opportunity to enhance the project's documentation framework. As a proactive full-stack professional, I believe in taking ownership of codebase improvements that drive project success. Superior documentation is fundamental to project scalability, maintainer efficiency, and community growth.
This comprehensive update establishes a solid foundation for future contributors while providing essential context for ongoing development of the Rock-Paper-Scissors game module.