Add CoolSMS PHP SDK, and update Composer dependencies

vendor/coolsms/php-sdk/app/Nurigo/Exceptions/CoolsmsServerException.php

@@ -0,0 +1,35 @@
+<?php
+/* vi:set sw=4 ts=4 expandtab: */
+
+namespace Nurigo\Exceptions;
+
+/**
+ * @class CoolsmsServerException
+ * @brief Thrown when an Server call returns an exception.
+ */
+class CoolsmsServerException extends CoolsmsException
+{
+    /**
+     * Coolsms API Response data
+     */
+    protected $response;
+    protected $response_data;
+
+    /**
+     * @brief Make a new SDK Exception with the given result.
+     * @param string  $response [required] response from the API server & SDK Client
+     * @param integer $code     [required] response code
+     */
+    public function __construct($response, $code) {
+        $this->response = $response;
+        $response_data = $response;
+        parent::__construct(json_encode($response), $code);
+    }
+
+    /**
+     * @brief return json decoded response data 
+     */
+    public function getResponseData() {
+        return $this->response_data;
+    }
+}