made commands case insensitive

src/main/java/me/kcm/command/ModServerCommandManager.java

@@ -85,7 +85,7 @@ public class ModServerCommandManager extends ServerCommandManager
         }
 
         String[] args = rawCommand.split(" ");
-        String command = args[0];
+        String command = args[0].toLowerCase();
         args = dropFirstString(args);
         
         ICommand icommand = this.getCommands().get(command);