Add missing readme

rc-zip-cli/README.md

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+[![MIT OR Apache-2.0 licensed](https://img.shields.io/badge/license-MIT+Apache_2.0-blue.svg)](./LICENSE)
+[![Crates.io](https://img.shields.io/crates/v/rc-zip-cli)](https://crates.io/crates/rc-zip-cli)
+[![docs.rs](https://docs.rs/rc-zip-cli/badge.svg)](https://docs.rs/rc-zip-cli)
+
+# rc-zip-cli
+
+![The rc-zip logo: a person with long hair and nice brows being opened from the bottom up with a zipper. On dark backgrounds, you can see a skull being revealed. On light backgrounds you cannot.](https://github.com/user-attachments/assets/5fecd286-9518-4a72-b544-56675d7f31f6)
+
+_Logo by [MisiasArt](https://misiasart.com)_
+
+This is an example CLI tool using the [rc-zip-sync crate](https://crates.io/crates/rc-zip-sync).
+
+It is not necessarily recommended as a day-to-day archive extractor, but you do you.