Made version reflect cargo version

src/main.rs

@@ -3,11 +3,13 @@ use clap_nested::{Commander};
 
 mod command;
 
+const VERSION: Option<&'static str> = option_env!("CARGO_PKG_VERSION");
+
 fn main() {
     match Commander::new()
         .options(|app| {
             app.name("Walkman Tools")
-            .version("1.0")
+            .version(VERSION.unwrap_or("UNKNOWN"))
             .author("Drew Short <warrick@sothr.com>")
             .about("Management tool for walkman mp3 players")
             .arg(
@@ -27,7 +29,7 @@ fn main() {
             Ok(())
         })
         .run() {
-        Ok(result) => std::process::exit(0),
+        Ok(_) => std::process::exit(0),
         Err(err) => println!("{}", err)
     }
 }