vc plugin

<?php

if(!defined('ABSPATH')) die('-1');

 //class started
class themenameVCExtendAddonClass{

    function __construct(){
        add_action('init', array($this, 'seoIntegrateWithVC'));
    }

    public function seoIntegrateWithVC(){
        if( ! defined('WPB_VC_VERSION')){
            add_action('admin_notices', array($this, 'seoShowVcVersionNotice'));
            return;
        }

        // visual composer addons
        include SEO_ACC_PATH . '/vc-addons/vc-slides.php';
    }

    public function seoShowVcVersionNotice(){
        $theme_data = wp_get_theme();
        echo '
            <div class="notice notice-warning">
                <p>'.sprintf(__('<strong>%s</strong> recommends <strong> <a href="'.site_url().'/wp-admin/themes.php?page=tgmpa-install-plugins" target="_blank">Visual Composer</a></strong> plugin to be installed and activated on your site.', 'mytheme'), $theme_data->get('Name')).'
                </p>
            </div>
        ';
    }
}

// Finally initialize code
new themenameVCExtendAddonClass();