move app/plugins to app/listeners and give them the App\Listener namespace.

app/config/loader.php

@@ -2,20 +2,14 @@
 
 $loader = new \Phalcon\Loader();
 
-/**
- * We're a registering a set of directories taken from the configuration file
- */
-$loader->registerDirs(
-    array(
-        $config->application->pluginsDir
-    )
-)->register();
-
 $loader->registerNamespaces(array(
     'App\Controller'    => $config->application->controllersDir,
+    'App\Listener'      => $config->application->listenersDir,
     'Model'             => $config->application->modelsDir,
     'Form'              => $config->application->formsDir,
     'Httpcb'            => $config->application->libraryDir,
 ));
 
+$loader->register();
+
 require_once __DIR__ . '/../../vendor/autoload.php';