Install plugin automatically when install wordpress theme

gistfile1.txt

Downloadez https://github.com/thomasgriffin/TGM-Plugin-Activation

In functions.php:

require_once get_template_directory() . '/class-tgm-plugin-activation.php';
add_action( 'tgmpa_register', 'zerif_register_required_plugins' );

function zerif_register_required_plugins() {
 
	$plugins = array(
		
		array(
			'name'     => 'Widget customizer',
			'slug'     => 'widget-customizer',
			'source'   => get_template_directory() . '/plugins/widget-customizer.zip', 
			'required' => true,
			'force_activation'   => true, 
            'force_deactivation' => true,
		)
	);
 
	$theme_text_domain = 'zerif';

	
	$config = array(
        'default_path' => '',                      
        'menu'         => 'tgmpa-install-plugins', 
        'has_notices'  => true,                   
        'dismissable'  => true,                  
        'dismiss_msg'  => '',                   
        'is_automatic' => false,                 
        'message'      => '',     
        'strings'      => array(
            'page_title'                      => __( 'Install Required Plugins', $theme_text_domain ),
            'menu_title'                      => __( 'Install Plugins', $theme_text_domain ),
            'installing'                      => __( 'Installing Plugin: %s', $theme_text_domain ), 
            'oops'                            => __( 'Something went wrong with the plugin API.', $theme_text_domain ),
            'notice_can_install_required'     => _n_noop( 'This theme requires the following plugin: %1$s.', 'This theme requires the following plugins: %1$s.' ),
            'notice_can_install_recommended'  => _n_noop( 'This theme recommends the following plugin: %1$s.', 'This theme recommends the following plugins: %1$s.' ),
            'notice_cannot_install'           => _n_noop( 'Sorry, but you do not have the correct permissions to install the %s plugin. Contact the administrator of this site for help on getting the plugin installed.', 'Sorry, but you do not have the correct permissions to install the %s plugins. Contact the administrator of this site for help on getting the plugins installed.' ),
            'notice_can_activate_required'    => _n_noop( 'The following required plugin is currently inactive: %1$s.', 'The following required plugins are currently inactive: %1$s.' ),
            'notice_can_activate_recommended' => _n_noop( 'The following recommended plugin is currently inactive: %1$s.', 'The following recommended plugins are currently inactive: %1$s.' ),
            'notice_cannot_activate'          => _n_noop( 'Sorry, but you do not have the correct permissions to activate the %s plugin. Contact the administrator of this site for help on getting the plugin activated.', 'Sorry, but you do not have the correct permissions to activate the %s plugins. Contact the administrator of this site for help on getting the plugins activated.' ), 
            'notice_ask_to_update'            => _n_noop( 'The following plugin needs to be updated to its latest version to ensure maximum compatibility with this theme: %1$s.', 'The following plugins need to be updated to their latest version to ensure maximum compatibility with this theme: %1$s.' ), 
            'notice_cannot_update'            => _n_noop( 'Sorry, but you do not have the correct permissions to update the %s plugin. Contact the administrator of this site for help on getting the plugin updated.', 'Sorry, but you do not have the correct permissions to update the %s plugins. Contact the administrator of this site for help on getting the plugins updated.' ), 
            'install_link'                    => _n_noop( 'Begin installing plugin', 'Begin installing plugins' ),
            'activate_link'                   => _n_noop( 'Begin activating plugin', 'Begin activating plugins' ),
            'return'                          => __( 'Return to Required Plugins Installer', $theme_text_domain ),
            'plugin_activated'                => __( 'Plugin activated successfully.', $theme_text_domain ),
            'complete'                        => __( 'All plugins installed and activated successfully. %s', $theme_text_domain ), 
            'nag_type'                        => 'updated'
        )
    );
 
	tgmpa( $plugins, $config );
 
}