Update index.html

Author: manhtai

index.html

@@ -159,9 +159,9 @@ <h2>PlainPrinter</h2>
           <h2>Mememe</h2>
           <p>Meme for Slack</p>
         </a>
-        <a class="product-item" href="#">
-          <h2>TixGun</h2>
-          <p>QR-code ticketing system</p>
+        <a class="product-item" href="https://github.com/manhtai/whatthefoto">
+          <h2>WhatTheFoto</h2>
+          <p>Android photo frame app</p>
         </a>
       </section>
     </main>