Dependencies, and readme updates.

commander/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "physical-commander"
+description = "A commander hosts nodes."
+version.workspace = true
+edition.workspace = true
+repository.workspace = true
+readme.workspace = true
+license.workspace = true
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+physical = { path = ".." }
+tracing.workspace = true
+futures-lite.workspace = true
+async-io.workspace = true

commander/src/lib.rs

@@ -0,0 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}