WordPress style and script enqueue

stsc.php

<?php 
function ah_scripts(){
            //register style
            wp_register_style( 'ah-bootstrap', get_template_directory_uri() . '/css/bootstrap.min.css', array(), '3.37', 'all' );
            wp_register_style( 'ah-slicknav', get_template_directory_uri() . '/css/slicknav.min.css', array(), '1.0.10', 'all' );
            wp_register_style( 'ah-font-awesome', get_template_directory_uri() . '/css/font-awesome.min.css', array(), '4.5', 'all' );
            wp_register_style( 'ah-google-font', 'https://fonts.googleapis.com/css?family=Titillium+Web:400,700,900', array(), '0.1', 'all' );

            //enqueue style
            wp_enqueue_style( 'ah-bootstrap' );
            wp_enqueue_style( 'ah-slicknav' );
            wp_enqueue_style( 'ah-font-awesome' );
            wp_enqueue_style( 'ah-google-font' );

            //enqueue main stylesheet
            wp_enqueue_style( 'ah-style', get_stylesheet_uri() );

            //register script
            wp_register_script('ah-modernizr', get_template_directory_uri() . '/js/vendor/modernizr-2.8.3.min.js', array(), '2.8.3', false);
            wp_register_script('ah-bootstrap', get_template_directory_uri() . '/js/bootstrap.min.js', array(), '3.37', true);
            wp_register_script('ah-slicknav', get_template_directory_uri() . '/js/jquery.slicknav.min.js', array(), '1.0.10', true);
            wp_register_script('ah-main', get_template_directory_uri() . '/js/main.js', array(), '0.1', true);
            wp_register_script('ah-jq', get_template_directory_uri() . '/js/vendor/jquery-1.12.0.min.js', array(), '1.12.0', true);
            wp_enqueue_script('ah-jq');
            //enqueue script
            wp_enqueue_script('ah-modernizr');
            wp_enqueue_script('ah-bootstrap');
            wp_enqueue_script('ah-slicknav');
            wp_enqueue_script('ah-main');
            
}
add_action('wp_enqueue_scripts', 'ah_scripts');

?>