Mixed spec updates

.gitignore

@@ -1 +1,2 @@
-.DS_Store
+.DS_Store
+vendor

.travis.yml

@@ -1,8 +1,6 @@
 language: php
 sudo: false
 php:
-    - 5.4
-    - 5.5
     - 5.6
     - 7.0
     - hhvm

README.md

@@ -14,7 +14,7 @@ For more information, please visit [https://account.sendinblue.com/support](http
 
 ## Requirements
 
-PHP 5.4.0 and later
+PHP 5.6 and later
 
 ## Installation & Usage
 ### Composer
@@ -42,7 +42,7 @@ Then run `composer install`
 Download the files and include `autoload.php`:
 
 ```php
-    require_once('/path/to/APIv3-php-library/autoload.php');
+    require_once('/path/to/APIv3-php-library/vendor/autoload.php');
 ```
 
 ## Tests
@@ -63,14 +63,19 @@ Please follow the [installation procedure](#installation--usage) and then run th
 require_once(__DIR__ . '/vendor/autoload.php');
 
 // Configure API key authorization: api-key
-SendinBlue\Client\Configuration::getDefaultConfiguration()->setApiKey('api-key', 'YOUR_API_KEY');
+$config = SendinBlue\Client\Configuration::getDefaultConfiguration()->setApiKey('api-key', 'YOUR_API_KEY');
 // Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
-// SendinBlue\Client\Configuration::getDefaultConfiguration()->setApiKeyPrefix('api-key', 'Bearer');
+// $config = SendinBlue\Client\Configuration::getDefaultConfiguration()->setApiKeyPrefix('api-key', 'Bearer');
 
-$api_instance = new SendinBlue\Client\Api\AccountApi();
+$apiInstance = new SendinBlue\Client\Api\AccountApi(
+    // If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
+    // This is optional, `GuzzleHttp\Client` will be used as default.
+    new GuzzleHttp\Client(),
+    $config
+);
 
 try {
-    $result = $api_instance->getAccount();
+    $result = $apiInstance->getAccount();
     print_r($result);
 } catch (Exception $e) {
     echo 'Exception when calling AccountApi->getAccount: ', $e->getMessage(), PHP_EOL;
@@ -249,7 +254,6 @@ Class | Method | HTTP request | Description
  - [GetEmailEventReportEvents](docs/Model/GetEmailEventReportEvents.md)
  - [GetExtendedCampaignOverviewSender](docs/Model/GetExtendedCampaignOverviewSender.md)
  - [GetExtendedCampaignStats](docs/Model/GetExtendedCampaignStats.md)
- - [GetExtendedCampaignStatsLinksStats](docs/Model/GetExtendedCampaignStatsLinksStats.md)
  - [GetExtendedClientAddress](docs/Model/GetExtendedClientAddress.md)
  - [GetExtendedContactDetailsStatistics](docs/Model/GetExtendedContactDetailsStatistics.md)
  - [GetExtendedContactDetailsStatisticsClicked](docs/Model/GetExtendedContactDetailsStatisticsClicked.md)

composer.json

@@ -18,14 +18,14 @@
         }
     ],
     "require": {
-        "php": ">=5.4",
+        "php": ">=5.6",
         "ext-curl": "*",
         "ext-json": "*",
-        "ext-mbstring": "*"
+        "ext-mbstring": "*",
+        "guzzlehttp/guzzle": "^6.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.8",
-        "satooshi/php-coveralls": "~1.0",
+        "phpunit/phpunit": "^4.8",
         "squizlabs/php_codesniffer": "~2.6",
         "friendsofphp/php-cs-fixer": "~1.12"
     },
@@ -37,7 +37,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "5.0.x-dev"
+            "dev-master": "6.0.x-dev"
         }
     }
 }