Merge pull request #9 from ahferriz/bug-countable

Fixed Countable::count return type

Author: denisdulici

src/Menu.php

@@ -160,7 +160,7 @@ public function all()
      *
      * @return int
      */
-    public function count()
+    public function count(): int
     {
         return count($this->menu);
     }

src/MenuBuilder.php

@@ -559,7 +559,7 @@ public function divider()
      *
      * @return int
      */
-    public function count()
+    public function count(): int
     {
         return count($this->items);
     }