docs: add README

README.md

@@ -0,0 +1,3 @@
+# lgit
+
+Recursively list Git repositories.

src/main.rs

@@ -19,6 +19,7 @@ const GIT_DIR: &str = ".git";
 const CACHE_DIR_TAG: &str = "CACHEDIR.TAG";
 const CACHE_DIR_TAG_HEADER: &[u8] = b"Signature: 8a477f597d28d172789f06886806bc55";
 
+/// Recursively list Git repositories.
 #[derive(Parser)]
 #[command(version)]
 struct Cli {