Update README.md

Author: mdabir1203

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 This repository represents various Modular Projects based on Rust Programming Language. The goal is to learn various programming concepts of Rust through building Projects. The idea is inspired from @JohnCrickett Challenge. 
 
+[![CI](https://github.com/mdabir1203/Modular-Rust-Learning/actions/workflows/CI.yml/badge.svg?branch=main)](https://github.com/mdabir1203/Modular-Rust-Learning/actions/workflows/CI.yml)
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 # WHY \ What \ How 
 
 ### Progressive Learning Path