Support Laravel 5.2

Author: nurmanhabib

src/Activators/NavActivator.php

@@ -32,7 +32,7 @@ protected function checkActive(Nav $nav)
 
     public function hasActive(NavCollection $menu)
     {
-        return $menu->getItems()->first(function (Nav $nav) {
+        return false !== $menu->getItems()->search(function (Nav $nav) {
             return $this->checkActive($nav);
         });
     }

src/NavCollection.php

@@ -160,14 +160,14 @@ protected function filterNav(Nav $nav, callable $callback)
         return $callback($nav);
     }
 
-    public function isEmpty()
+    public function isNotEmpty()
     {
-        return $this->items->isEmpty();
+        return !$this->isEmpty();
     }
 
-    public function isNotEmpty()
+    public function isEmpty()
     {
-        return $this->items->isNotEmpty();
+        return $this->items->isEmpty();
     }
 
     public function getItems()