Update demo

demo/scripts/demo.js

@@ -110,13 +110,19 @@ document.addEventListener("DOMContentLoaded", function () {
 
   document.querySelector('#animated-tour')
     .addEventListener('click', () => {
-      boringTourDriver.reset();
+      if (boringTourDriver.isActivated) {
+        boringTourDriver.reset();
+      }
+
       animatedTourDriver.start();
     });
 
   document.querySelector('#boring-tour')
     .addEventListener('click', () => {
-      animatedTourDriver.reset();
+      if (animatedTourDriver.isActivated) {
+        animatedTourDriver.reset();
+      }
+
       boringTourDriver.start();
     });