Update index.html

static/index.html

@@ -242,7 +242,7 @@
 
                         <a href="http://www.wageningenur.nl/en.htm"        title="Wageningen University"><img src="static/images/wur.png" alt="Wageningen University" class="srcicon"></a>
 
-                        2012-2014
+                        2012-2015
                     </b>
 
                     <i class="glyphicon glyphicon-question-sign" title="Help" data-ng-click="showHelp()"></i>