function jpo_start()
{
    if (is_admin()) {
        require_once plugin_dir_path(__FILE__) . 'class.jetpack-onboarding-end-points.php';
        require_once plugin_dir_path(__FILE__) . 'class.jetpack-onboarding-welcome-panel.php';
        Jetpack_Onboarding_EndPoints::init();
        Jetpack_Onboarding_WelcomePanel::init();
    }
}
 static function init_welcome_panel()
 {
     $screen = get_current_screen();
     if ($screen->base == 'dashboard') {
         //reset data
         if (isset($_GET['jpo_reset'])) {
             delete_option(Jetpack_Onboarding_EndPoints::STEP_STATUS_KEY);
             delete_option(Jetpack_Onboarding_EndPoints::FIRSTRUN_KEY);
             delete_option(Jetpack_Onboarding_EndPoints::STARTED_KEY);
             delete_option(Jetpack_Onboarding_EndPoints::DISABLED_KEY);
             delete_option(Jetpack_Onboarding_EndPoints::CONTACTPAGE_ID_KEY);
             delete_option('jetpack_blog_token');
             delete_option('jetpack_id');
             //also reset JP data
             delete_option('jetpack_options');
             // Delete all non-compact options
             delete_option('jetpack_register');
             delete_option('jetpack_activated');
             delete_option('jetpack_active_modules');
             delete_option('jetpack_do_activate');
             // Delete all legacy options
             delete_option('jetpack_was_activated');
             delete_option('jetpack_auto_installed');
             delete_transient('jetpack_register');
             wp_redirect(remove_query_arg('jpo_reset'));
             die;
         }
         if (get_option(Jetpack_Onboarding_EndPoints::DISABLED_KEY, false)) {
             return;
         }
         //replace the usual welcome panel with our own
         remove_action('welcome_panel', 'wp_welcome_panel');
         add_action('welcome_panel', array(__CLASS__, 'wp_welcome_panel'));
         // vars to inject into javascript
         $jpo_vars = Jetpack_Onboarding_EndPoints::js_vars();
         //IE-only shims
         global $wp_scripts;
         wp_register_script('react', plugins_url('js/react-0.13.3.min.js', __FILE__), array());
         wp_enqueue_script('react');
         wp_register_script('ie-shims', plugins_url('dist/ie-shims.js', __FILE__), array('react'));
         $wp_scripts->add_data('ie-shims', 'conditional', 'lt IE 9');
         //Core JS app
         wp_register_script('jetpack-onboarding', plugins_url('dist/jetpack-onboarding.js', __FILE__), array('jquery', 'underscore', 'wp-pointer', 'ie-shims', 'react'));
         wp_localize_script('jetpack-onboarding', 'JPS', $jpo_vars);
         wp_enqueue_script('jetpack-onboarding');
         // CSS
         wp_enqueue_style('jetpack-onboarding-components', plugins_url('dist/jetpack-onboarding.css', __FILE__), array('wp-admin'));
         wp_enqueue_style('jetpack-onboarding-panel', plugins_url('css/welcome-panel.css', __FILE__), array('wp-admin', 'wp-pointer'));
         wp_enqueue_style('ie8');
     }
 }