Fix readme and clap help

src/recv.rs

@@ -23,6 +23,7 @@ pub struct Recv {
     /// Deadline until messages are received (format: "%Y-%m-%d %H:%M:%S")
     #[clap(short, long, conflicts_with = "timeout")]
     pub deadline: Option<String>,
+    /// Name of the queue
     #[clap(value_name = "QUEUE")]
     pub queue: String,
 }