📄 Optimize README: Add badges, TOC, features table, and better structure

[Gingiris]

Hi! I noticed this excellent tool has a README without badges or a table of contents — here are some improvements.

What I improved:

• ✅ Added badges (Python version, License, Stars, Last Commit)
• ✅ Added Table of Contents for easy navigation
• ✅ Added Features table summarizing core capabilities
• ✅ Added Configuration section with full CLI argument reference table
• ✅ Added Output Format section explaining CSV columns
• ✅ Added Troubleshooting section for common issues
• ✅ Improved Installation section with clearer steps

Before vs After

Metric	Before	After
Size	3,115 chars	~4,500 chars
Badges	0	4
TOC	❌	✅
Features table	❌	✅
Troubleshooting	❌	✅

No code changes — only documentation improvements.

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README optimized with Gingiris README Generator