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README.md

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 <p align="center">
 <em>GMAB is a cutting-edge optimization algorithm that merges genetic algorithms and multi-armed bandit strategies to efficiently solve stochastic problems.</em>
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+<a href="https://github.com/E-MAB/G-MAB/actions?query=workflow%3ARust+event%3Apush+branch%3Amain" target="_blank">
+    <img src="https://github.com/E-MAB/G-MAB/actions/workflows/rust.yml/badge.svg?event=push&branch=main" alt="Build & Test">
+</a>
+</p>
 
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