fix

Author: ShisunXia

README.md

@@ -273,9 +273,8 @@ The package is developed and tested under Elasticsearch ``v6.*``. It should be a
       ```php
       User::es()->whereNull('name')->get()
       ```
-   2. Find all users with no address
+   2. Find all users who don't have address
          ```php
-         // Find the user whose name starts with 'Leo'
          User::es()->whereNull('Addresses')->get()
          ```
 
@@ -294,9 +293,8 @@ The package is developed and tested under Elasticsearch ``v6.*``. It should be a
       ```php
       User::es()->whereNotNull('name')->get()
       ```
-   2. Find all users with at least one address
+   2. Find all users who have at least one address
          ```php
-         // Find the user whose name starts with 'Leo'
          User::es()->whereNotNull('Addresses')->get()
          ```
 

src/LaravelElasticsearchQueryBuilder.php

@@ -753,6 +753,9 @@ public function scroll($scroll_alive = '5m', $scroll_size = 500, $json = false)
 		$this->scroll_size = $scroll_size;
 		$scroll_id = $this->get()->rawResults()['_scroll_id'];
 		$results = $this->get()->toArray();
+		if($json) {
+			$results = [json_encode($results)];
+		}
 		while(true) {
 			$response = $this->es_client->scroll([
 					'scroll_id' => $scroll_id,