added multiple device doc

Author: jmstriegel

offline.html

@@ -215,7 +215,7 @@ <h3>How do I sign in to Coder?</h3>
         </div>
         <div class="faq rollup">
             <h3>Can I have more than one Coder device on my network?</h3>
-            <p>Currently, this requires a bit of manual configuration of each device. We’re working on making this easier – stay tuned!</p>
+            <p>Currently, this requires a bit of manual configuration of each device. We’re working on making this easier, but here's a guide for <a href="https://github.com/googlecreativelab/coder/wiki/Using-Multiple-Coder-Devices-(Lab-Setup)">Using Multiple Coder Devices</a>, which you'll find useful for setting up a small lab with several units.</p>
         </div>
         <div class="faq rollup">
             <h3>I forgot my Coder's password!</h3>