Konami code easter egg enables nyancat ;P

src/js/yunohost/events.js

@@ -83,4 +83,22 @@
     app.bind('logout', function(e, data) {
         $('#yunohost-version').empty();
     });
+
+
+    // Konamicode ;P   up up down down left right left right b a
+    var konami_code = [38, 38, 40, 40, 37, 39, 37, 39, 66, 65],
+    konami_step = 0;
+    $(document).keydown(function (e) {
+        if (e.keyCode === konami_code[konami_step++]) {
+            if (konami_step === konami_code.length) {
+                konami_step = 0;
+                $('#main').addClass("with-nyancat");
+                return false;
+            }
+        }
+        else {
+            konami_step = 0;
+        }
+    });
+
 })();