simple instructions for using command-line

README.md

@@ -7,3 +7,19 @@
 [![crates.io](https://img.shields.io/crates/v/s2id)](https://crates.io/crates/s2id)
 [![Docs](https://docs.rs/s2id/badge.svg)](https://docs.rs/s2id)
 [![Apache-2 licensed](https://img.shields.io/crates/l/s2id)](./LICENSE)
+
+## Installation
+
+```console
+$ cargo install s2id --all-features
+```
+
+## Use
+
+```console
+$ ssi help
+$ ssi new --no-expiry --uid "My Name <mailto:[email protected]>"
+$ ssi list
+$ SIG=`ssi sign [email protected] -t "Test message"`
+$ ssi verify $SIG
+```

src/main.rs

@@ -197,7 +197,7 @@ fn main() {
             let signer = runtime
                 .find_signer(ssi, &passwd)
                 .expect("unknown signing identity");
-            eprintln!("Using key {signer})");
+            eprintln!("Using key {signer}");
             let cert = signer.sign(msg);
             println!("{cert}");
         }