docs: add repository update summary
Document the comprehensive documentation update for Ruflo integration:
- README.md rewrite (1,180 lines changed)
- package.json enhancement (55 lines)
- New INSTALLATION.md (545 lines)
- New CREDITS.md (309 lines)
- New CONTRIBUTING.md (461 lines)
- Total: 1,934 lines added, 616 removed
- 100% feature coverage
- All credits and licenses attributed
