Added Johand back

Johannes finally returned from his long break. and he is now developing
for musare.com

app/templates/about.html

@@ -6,7 +6,7 @@
                 <h2>About</h2>
                 <p>Musare is a modern, open-source Music App.</p>
                 <p>Listen to music in one of the various stations, specific to one genre</p>
-                <p>Built by <a href="https://github.com/AkiraLaine">@AkiraLaine</a> and <a href="https://github.com/KrisVos130">@KrisVos130</a></p>
+                <p>Built by <a href="https://github.com/AkiraLaine">@AkiraLaine</a>, <a href="https://github.com/KrisVos130">@KrisVos130</a> and <a href="https://github.com/johand199">@johand199</a></p>
             </div>
         </div>
     </div>