[Plugin: WordPress SEO by Yoast] Twitter Bootstrap Breadcrumbs

I have a theme using twitter bootstrap, and I setup yoast to match the styling with this snippet of code:

<!-- Enable Yoast Breadcrumbs (boostrap) -->
<?php if ( function_exists('yoast_breadcrumb') ) {
	$breadcrumbs = yoast_breadcrumb( '<ul class="breadcrumb"><li>', '</li></ul>', false );
	echo str_replace( '|', ' <span class="divider">/</span></li><li>', $breadcrumbs );
} ?>

The default Divider in Bootstrap is the following:
<span class="divider">/</span>

But this needs to get set within the wordpress admin panel. I was wondering if I could automatically set this via functions.php?

http://ww.wp.xz.cn/extend/plugins/wordpress-seo/