How did Neil Patel make the text on http://www.quicksprout.com/pro dynamically insert the cirt name into the HTML? : <p>This is an awesome way to appeal to folks from the city that they are browsing from.  Is this some kind of JS technique?  Would love a link to an example or if it already exists on GitHub?  Sorry for the newbie question--I'm new to front-end dev.</p>

<p>Screenshot:</p>

<p><a href="http://i.stack.imgur.com/sCWqD.png" rel="nofollow">Quicksprout site:</a></p>
