Updated Code Weekend button text

Author: Zhixinb

index.html

@@ -194,7 +194,7 @@ <h1>Code Weekend </h1>
 
                             <h4 style="text-align: center">A weekend long series of workshops where students teach you how to build a full webapp from scratch</h4>
                             <div style="margin: 0 auto; text-align: center">
-                            <a href="http://dinphil.github.io/code-weekend" id="n2" class="button button-primary" style="font-size: 15px">Code Weekend Spring 2016</a> 
+                            <a href="http://dinphil.github.io/code-weekend" id="n2" class="button button-primary" style="font-size: 15px">Code Weekend Fall 2018</a> 
                             <a href="http://dinphil.github.io/code-weekend/past/fall15/" id="n2" class="button button-primary" style="font-size: 15px">Code Weekend Fall 2015</a>
 
                             </div>
@@ -501,4 +501,4 @@ <h4 style="text-align:center" id="modal-date">Title</h2>
             );
 </script>
 
-</html>
+</html>