Minor readme fix

Minor readme file fix.

Json support

Added

• --json-output PATH: write machine-readable JSON report (non-breaking).

Improved

• Substantial unit test coverage; parity test for JSON/CSV outputs.
• README clarifications and examples.

Enhanced Documentation and Metadata

• Clarified that v0.1.x analyzes a single file only; added shell workarounds for directories.
• Improved README: badges for version, Python versions, license, and download metrics (Pepy).
• Add changelog file

pycodereview fix package structure

v0.1.1

bump version to 0.1.1

v0.1.0 - initial alpha

First public release

• CLI: pycodereview [PATH ...] with --merge-issues, --min-priority, --max-lines, --format
• Outputs CSV or table; merges duplicate findings by rule
• Rules: correctness, security, concurrency, resources, robustness, style, portability, process

Python >=3.9

Full Changelog: https://github.com/sofiand-png/pycodereview/commits/v0.1.0