Adding Yelp Social Icons to the site.

Hey folks,

I have added WPMUDEV Dashboard support now FYI…

I would like to add one more icon to the social icons on this site . Note that the icons are both in the secondary nav as well as in the footer. I would like it to link to the Yelp page (opening in a new window): To this Yelp url (not the bitly but the url after you click and view):

How can we do this?