function __construct()
 {
     // Call Parent Constructor - still need all frontend operations
     parent::__construct();
     $this->icon = plugins_url('images/amazon-icon.png', $this->filename);
     $this->base_name = plugin_basename($this->filename);
     $this->plugin_dir = dirname($this->base_name);
     $this->extras_dir = WP_PLUGIN_DIR . '/' . $this->plugin_dir . '/extras/';
     // Hook in the admin menu registration
     add_action('admin_menu', array($this, 'admin_menu'));
     // Register hook to perform options installation
     register_activation_hook(__FILE__, array($this, 'install'));
 }