Update README to reflect new international and industry policies

[kmadan]

This PR updates the README to accurately reflect the new policies that have been added to GOPAL, particularly in the international and industry-specific categories.

Changes Made

Directory Structure Updates

• Added Brazil to international frameworks
• Enhanced NIST description to reflect complete AI RMF 1.0 implementation
• Updated India description to include Digital India Policy
• Added education industry vertical
• Reorganized industry_specific section alphabetically

New Detailed Sections

• International Regulatory Frameworks: Detailed breakdown of each framework including NIST's four core functions (GOVERN, MAP, MEASURE, MANAGE)
• Industry-Specific Policies: Comprehensive description of each industry vertical, with special focus on the new education sector policies
• Recent Additions: New section highlighting the latest policy additions to help users understand what's new

Education Sector Highlights

The new education policies cover:

• Academic integrity and AI plagiarism detection
• Assessment and evaluation with human oversight
• Fairness and equity in educational AI systems
• Safe learning environments and age-appropriate content
• Student data privacy (FERPA, COPPA compliance)

Impact

• Provides users with accurate, up-to-date information about available policies
• Helps users understand the scope and coverage of GOPAL
• Makes it easier to discover relevant policies for specific use cases
• Highlights the growing coverage of international regulatory frameworks

Testing

• README formatting is correct
• All directory references are accurate
• Links and structure are maintained
• Content accurately reflects current policy structure

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Pull Request opened by Augment Code with guidance from the PR author

[kmadan]

Superseded by #14, which rewrites the README to cover every framework this PR was highlighting (Brazil, NIST, India, Education, Automotive, etc.) with quantitative depth, hero diagrams, and a comparison table. Closing in favor of #14.