minor improvement for command tool

Limelight/Input/CommandManager.swift

@@ -308,14 +308,15 @@ import UIKit
 
     }
     
-    @objc public func addCommand(_ command: RemoteCommand) {
+    @objc public func addCommand(_ command: RemoteCommand) -> Bool {
         command.keyboardCmdString = command.keyboardCmdString.uppercased() // convert all letters to upper case
         if(command.alias.trimmingCharacters(in: .whitespacesAndNewlines).count == 0) {command.alias = command.keyboardCmdString} // copy cmd string as alias when alias is empty
         let keyStrings = extractKeyStrings(from: command.keyboardCmdString)
-        if (keyStrings == nil) {return}  // in case of non-keyboard command strings, return
+        if (keyStrings == nil) {return false}  // in case of non-keyboard command strings, return false
         commands.append(command)
         saveCommands()
         viewController?.reloadTableView() // don't know why but this reload has to be called from the CommandManager, doesn't work by calling it in the viewcontroller, probably related with the dialog box.
+        return true
     }
     
     @objc public func deleteCommand(at index: Int) {