Add autocomplete multiselect prompt to example.js

Add a new autocompleteMultiselect question to the `example.js` file.

* Add a new question of type `autocompleteMultiselect` to the `questions` array.
* Set the `name` property to `actors`.
* Set the `message` property to `Pick your favorite actors`.
* Set the `choices` property to an array of actor objects with `title` and `value` properties.

example.js

@@ -85,6 +85,20 @@ let interval;
                 value: 'fallback'
             }
         },
+        {
+            type: 'autocompleteMultiselect',
+            name: 'actors',
+            message: 'Pick your favorite actors',
+            choices: [
+                { title: 'Cage', value: 'cage' },
+                { title: 'Clooney', value: 'clooney' },
+                { title: 'Gyllenhaal', value: 'gyllenhaal' },
+                { title: 'Gibson', value: 'gibson' },
+                { title: 'Grant', value: 'grant' },
+                { title: 'Hanks', value: 'hanks' },
+                { title: 'Downey Jr.', value: 'downey' }
+            ]
+        },
         {
             type: 'date',
             name: 'birthday',