Enhance README with project badges

Added badges for version, downloads, Python versions, license, wheel, and status to README.

Author: jayeshmepani

README.md

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 # PostalKit
 
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+[![PyPI version](https://img.shields.io/pypi/v/postalkit.svg?style=flat-square)](https://pypi.org/project/postalkit/) 
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+[![Downloads](https://static.pepy.tech/badge/postalkit)](https://pepy.tech/projects/postalkit) 
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+[![Downloads](https://img.shields.io/endpoint?url=https://pepy.tech/badge/postalkit)](https://pepy.tech/projects/postalkit) 
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+[![Python Versions](https://img.shields.io/pypi/pyversions/postalkit.svg?style=flat-square)](https://pypi.org/project/postalkit/) 
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+[![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)](https://opensource.org/licenses/MIT) 
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+[![Wheel](https://img.shields.io/pypi/wheel/postalkit?style=flat-square)](https://pypi.org/project/postalkit/) 
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+[![Status](https://img.shields.io/pypi/status/postalkit?style=flat-square)](https://pypi.org/project/postalkit/)  
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 **Zero-setup, one-command install Python package for libpostal. Designed as a strict 1:1 C-FFI wrapper.**
 
 Parsing international street addresses shouldn't require a Ph.D. in C compilation. `postalkit` provides the ultimate zero-friction environment to run the amazing [libpostal](https://github.com/openvenues/libpostal) C library natively in Python, without abstracting away its raw power.