Merge pull request #73 from jdonald/htf23-photos

Add links to HtF23 and HtF21 flickr photos

Author: Hum4n01d

media/index.html

@@ -43,6 +43,12 @@ <h3>Videos</h3>
           <iframe width="721" height="440" src="https://www.youtube.com/embed/4uACJ9X_sJ4?wmode=transparent&amp;rel=0" frameborder="0" allowfullscreen></iframe><br/>
         </div>
 
+        <h3>Hack the Future 23 Photos</h3>
+        <p><a href="https://www.flickr.com/photos/dcbriccetti/sets/72157689946018803">photos on flickr</a><br/>
+
+        <h3>Hack the Future 21 Photos</h3>
+        <p><a href="https://www.flickr.com/photos/nduguid/albums/72157666361507387">photos on flickr</a><br/>
+
         <h3>Hack the Future 19 Photos</h3>
         <p><a href="https://www.flickr.com/photos/22290667@N08/sets/72157688195025855">photos on flickr</a><br/>
         <a href="https://blogs.microsoft.com/bayarea/2017/09/21/recap-hack-the-future-19-at-microsoft-silicon-valley/">recap on Microsoft Bay Area blog</a></p>