Update README.md

Author: sbryngelson

README.md

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 ## Quantum-HRF-Tomography
 
-Efficient and Robust Reconstruction of Real-Valued Quantum States using Hadamard Random Forests
 
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](#license)
+[![CI](https://github.com/comp-physics/Quantum-HRF-Tomography/workflows/test/badge.svg)](https://github.com/comp-physics/Quantum-HRF-Tomography/actions)
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+Efficient and Robust Reconstruction of Real-Valued Quantum States using Hadamard Random Forests
 
 ### Summary