feat: change teaser to the latest release in README.md

Release v0.0.3: Add optimize command and fix type annotations

- Add interactive code optimization feature with language-specific best practices
- Support for reference document guidance in optimization
- Fix all MyPy type annotation errors across the codebase
- Improve function call resolution with simple name lookup
- Add comprehensive optimization documentation to README
- Support for all 7 programming languages in optimization mode

Switch to tree-sitter instead of ast to support multiple languagages;…

… now we can hook up any language (currently only 5)'

Merge pull request vitali87#7 from vitali87/chore/readme

docs: update README