Update SWCommand

SpigotCore_Main/src/de/steamwar/command/SWCommand.java

@@ -51,6 +51,10 @@ public abstract class SWCommand {
     private Message message = null;
     private List<String> defaultHelpMessages = new ArrayList<>();
 
+    protected SWCommand(String command) {
+        this(command, new String[0]);
+    }
+
     protected SWCommand(String command, String... aliases) {
         this.command = new Command(command, "", "/" + command, Arrays.asList(aliases)) {
             @Override