Merge pull request #29 from ba77osai/master

Passing an array of keys, not a collection to the model

src/Engines/TNTSearchEngine.php

@@ -149,7 +149,7 @@ public function map($results, $model)
             return Collection::make();
         }
 
-        $keys = collect($results['ids']);
+        $keys = collect($results['ids'])->values()->all();
         $models = $model->whereIn(
             $model->getKeyName(), $keys
         )->get()->keyBy($model->getKeyName());