Adds the post type and page slug to body class

wp_add_type_slug_body_class.php

function add_type_slug_body_class( $classes ) {
	global $post;
	if ( isset( $post ) ) {
	$classes[] = $post->post_type . '-' . $post->post_name;
	}
	return $classes;
}
add_filter( 'body_class', 'add_type_slug_body_class' );