Add windows os check

src/args.rs

@@ -2,7 +2,9 @@ use argh::FromArgs;
 use std::path::PathBuf;
 
 #[derive(FromArgs)]
-#[argh(description = "Tool for gathering location data from Yepzon servers.")]
+#[argh(
+    description = "Tool for gathering location data from Yepzon servers. Run without subcommands on windows to open nwg UI."
+)]
 pub struct EnvOpt {
     #[argh(
         option,

src/main.rs

@@ -18,6 +18,11 @@ fn main() {
             std::process::exit(1);
         }
     } else {
+        #[cfg(target_os = "windows")]
+        {
             println!("Open nwg UI instead");
         }
+        #[cfg(not(target_os = "windows"))]
+        println!("non-windows ui not supported. Please run with --help");
+    }
 }