ci: 📚 update README.md

README.md

@@ -1,4 +1,18 @@
-CLI tool for checking Cargo.toml dependency changes against git repo head
+<img src="./images/rodneylab-github-rust-crate-diffs.png" alt="Rodney Lab Rust crate diffs Git Hub banner">
+
+<p align="center">
+  <a aria-label="Open Rodney Lab site" href="https://rodneylab.com" rel="nofollow no:w
+  opener noreferrer">
+    <img alt="Rodney Lab logo" src="https://rodneylab.com/assets/icon.png" width="60" />
+  </a>
+</p>
+<h1 align="center">
+  rust-crate-diffs
+</h1>
+
+[![codecov](https://codecov.io/github/rodneylab/rust-crate-diffs/branch/main/graph/badge.svg?token=YMDK0KGM6B)](https://codecov.io/github/rodneylab/rust-crate-diffs)
+
+**CLI tool for checking Cargo.toml dependency changes against git repo head**
 
 > [!CAUTION]
 > ⚠ Work-in-progress.