WordPress credit

Hi,

Thank you for these MAGNFICENT Olsen-Light Theme.

I have this in the footer crediting CSSIgniter which is nice : Olsen WordPress Theme by CSSIgniter.
In the footer.php, I have this code (lines 50-57) :

<?php if ( get_theme_mod( 'footer_credits', 1 ) ) : ?>
<p
class="tagline">

<?php echo wp_kses( sprintf( __( '<a href="%1$s" title="%2$s">Olsen
WordPress Theme</a> by <a href="%3$s">CSSIgniter</a>', 'olsen-light'
),

esc_url( 'http://www.cssigniter.com/ignite/themes/olsen-light/'
),

esc_attr__( 'Blogging theme for WordPress', 'olsen-light' ),

esc_url( 'http://www.cssigniter.com/' )
),
olsen_light_get_allowed_tags( 'guide' ) ); ?>
</p>
<?php endif; ?>

I would also like to give credit to WordPress, just like what is in the Olsen-light demo page where you have this : Theme by CSSIgniter | Proudly powered by WordPress.
You can see it on this link http://www.cssigniter.com/demo2/?theme=olsenlight.

Somebody knows how to make it so the credit to WordPress also appear without breaking all the neat code of Olsen-Light Theme ??

Thanks for your help..

Regards