function twentyfifteen_init_jetpack()
{
/**
* Add our compat CSS file for custom widget stylings and such.
* Set the version equal to filemtime for development builds, and the JETPACK__VERSION for production.
*/
$version = Jetpack::is_development_version() ? filemtime(plugin_dir_path(__FILE__) . 'twentyfifteen.css') : JETPACK__VERSION;
wp_enqueue_style('twentyfifteen-jetpack', plugins_url('twentyfifteen.css', __FILE__), array(), $version);
wp_style_add_data('twentyfifteen-jetpack', 'rtl', 'replace');
}