Merge pull request #17 from beeglebug/master

Updated helper function to match the signature of laravel helpers

src/helpers.php

@@ -5,12 +5,16 @@
 if (!function_exists('settings'))
 {
     /**
-     * @param $key
+     * @param string|null $key
      * @param null $default
      * @return mixed|\Efriandika\LaravelSettings\Facades\Settings
      */
-    function settings($key, $default = null)
+    function settings($key = null, $default = null)
     {
+        if (is_null($key)) {
+            return app('settings');
+        }
+
         return Settings::get($key, $default);
     }
-}
+}