Fix for proper closing connection (no keep-alive)

README.md

@@ -1,13 +1,13 @@
-##Nextel API client
+## Nextel API client
 
-###Install
+### Install
 ```bash
 composer require am0nshi/nextel-client
 ```
 
-###Usage:
+### Usage:
 ```bash
 $client = new Nextel($apiKey); 
 $voiceRecordId = $client->uploadVoiceRecord($pathOrBinary);
 $client->initiateCall($phone, $voiceRecordId, $meta = null);
-```
+```

src/Nextel/Network.php

@@ -18,6 +18,7 @@ class Network
     public function __construct($apiKey)
     {
         $this->options['headers']['Authorization'] = $apiKey;
+        $this->options['headers']['Connection'] = 'close';
 
         $this->client = new \GuzzleHttp\Client();
     }
@@ -62,4 +63,4 @@ protected function normalizeUri($uri)
     {
         return $this->uri . $uri;
     }
-}
+}