added comment

Author: MekDrop

src/ProxyCommand.php

@@ -7,6 +7,12 @@
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
+/**
+ * ProxyCommand is used because ComposerCommands needs to define Commands from BaseCommand
+ * but all SymfonyCommands doesn't have such functionality so we use proxy class
+ *
+ * @package Imponeer\ComposerCustomCommands
+ */
 class ProxyCommand extends BaseCommand
 {