Added link to download continents

templates/index.html

@@ -54,6 +54,8 @@
         <p>Multiple generated files can be combined on the SD card.</p>
 
         <p>Compatible with Ardupilot Plane 4.0.6+ and Copter 4.0.4+</p>
+        
+        <p>To download entire continents of terrain data, see <a href=https://terrain.ardupilot.org/data/continents/>here<a>.</p>
 
         <h2>Terrain Options</h2>
         <form action="/generate" method="post">