add caption to image module

<script>
( function( $ ) {
    $( document ).ready( function() {
        var image = $( ".wpc-image-with-caption img" );
        if ( image.length ) {
            image.each( function() {
                var caption = $( this ).attr( 'title' );
                $( '<p class="wpc-image-caption">' + caption + '</a>' ).insertAfter( $( this ) );
            } )
        }
    } );
} )( jQuery );
</script>