Update README.md (#1)

- Include MQT logo

Author: hillmich

README.md

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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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 # MQT Qudit Compression - A Tool For Mapping Qubit Logic on Qudit Systems
 
 A tool for mapping qubits on a qudit architecture of preferred size