Merge pull request #26 from indykoning/master

Fix error, getSettingsModel returns class instead of an instance of class.

src/NovaSettings.php

@@ -95,7 +95,7 @@ public static function getSettings(array $settingKeys = null)
         })->pluck('value', 'key')->toArray();
     }
 
-    public static function getSettingsModel(): Model
+    public static function getSettingsModel(): string
     {
         return config('nova-settings.models.settings', Settings::class);
     }