Update Readme.md

Author: DocDBrown

Readme.md

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 # Shell Script to check crates.io features
 
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+[![CI](https://github.com/DocDBrown/GetRustCrateFeaturesShellScript/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/DocDBrown/GetRustCrateFeaturesShellScript/actions/workflows/ci.yml)
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 example usage "./crates-features.sh serde tokio anyhow tracing"
 
 ## Created so you can check what features there are for the crates you need