diff --git a/README.md b/README.md
index a3bda2b..0bc3db5 100644
--- a/README.md
+++ b/README.md
@@ -25,14 +25,14 @@ The SDK needs to be instantiated using your username and API key, which you can
 ```php
 <?php
 
-    use AfricasTalking;
+    use AfricasTalking\SDK\AfricasTalking;
 
     $username = 'YOUR_USERNAME'; // use 'sandbox' for development in the test environment
     $apiKey 	= 'YOUR_API_KEY'; // use your sandbox app API key for development in the test environment
     $AT = new AfricasTalking($username, $apiKey);
 
 ```
-You can now use the API to make calls using the $AT object we have just initiated.  See [example](example/) for more usage examples.
+You can now make API calls using the `$AT` object we have just created.  See [example](example/) for more usage examples.
 
 ### Airtime
 
@@ -62,10 +62,12 @@ $SMS->send($options);
 ```
 
 The options array `$options` has the following keys:
+
+- `message`: SMS content. `REQUIRED`
 - `to`: A single recipient or an array of recipients. `REQUIRED`
     - array of recipients contains 
 - `from`: Shortcode or alphanumeric ID that is registered with Africa's Talking account.
-- `message`: SMS content. `REQUIRED`
+- `enqueue`: Do not wait for an acknowledgement form telcos.
 
 #### Send Premium SMS
 
diff --git a/example/composer.json b/example/composer.json
index e149439..c0fdfca 100644
--- a/example/composer.json
+++ b/example/composer.json
@@ -3,7 +3,7 @@
     "description": "Simple SDK usage",
     "require": {
         "php": ">=5.3.0",
-        "africastalking/africastalking": "2.0.0",
+        "africastalking/africastalking": "2.0.1",
         "altorouter/altorouter": "1.1.0"
     }
 }
\ No newline at end of file
diff --git a/example/composer.lock b/example/composer.lock
index cb5a88a..96f722e 100644
--- a/example/composer.lock
+++ b/example/composer.lock
@@ -4,20 +4,20 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "73fc49b76ba9d8ba0b26bae9dec6da19",
+    "content-hash": "aba9d0587ebc14cee5eaa221c13ebbc8",
     "packages": [
         {
             "name": "africastalking/africastalking",
-            "version": "2.0.0",
+            "version": "2.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/AfricasTalkingLtd/africastalking-php.git",
-                "reference": "66db63b06dfa99c5674991340ccd58a39ba3591a"
+                "reference": "0c30aacb9f19cec623a67d64746f1e6334d26e9d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/AfricasTalkingLtd/africastalking-php/zipball/66db63b06dfa99c5674991340ccd58a39ba3591a",
-                "reference": "66db63b06dfa99c5674991340ccd58a39ba3591a",
+                "url": "https://api.github.com/repos/AfricasTalkingLtd/africastalking-php/zipball/0c30aacb9f19cec623a67d64746f1e6334d26e9d",
+                "reference": "0c30aacb9f19cec623a67d64746f1e6334d26e9d",
                 "shasum": ""
             },
             "require": {
@@ -40,23 +40,8 @@
             ],
             "authors": [
                 {
-                    "name": "Ian Juma",
-                    "email": "ijuma@africastalking.com",
-                    "homepage": "https://www.africastalking.com"
-                },
-                {
-                    "name": "Stephen Afam-Osemene",
-                    "email": "s.afamo@africastalking.com",
-                    "homepage": "https://www.africastalking.com"
-                },
-                {
-                    "name": "Paul Bombo",
-                    "email": "pbombo@africastalking.com",
-                    "homepage": "https://www.africastalking.com"
-                },
-                {
-                    "name": "Salama Balekage",
-                    "email": "sbalekage@africastalking.com",
+                    "name": "Africas's Talking",
+                    "email": "support@africastalking.com",
                     "homepage": "https://www.africastalking.com"
                 }
             ],
@@ -71,7 +56,7 @@
                 "ussd",
                 "voice"
             ],
-            "time": "2018-03-07T08:35:13+00:00"
+            "time": "2018-03-07T11:52:37+00:00"
         },
         {
             "name": "altorouter/altorouter",
diff --git a/src/SMS.php b/src/SMS.php
index d249f30..b5a006a 100644
--- a/src/SMS.php
+++ b/src/SMS.php
@@ -20,6 +20,10 @@ protected function doSend ($options, $isBulk, $isPremium)
 		];
 
 		if ($isBulk === true){
+			$data['bulkSMSMode'] = 1;
+		}
+
+		if (array_key_exists('enqueue', $options) && $options['enqueue']) {
 			$data['enqueue'] = 1;
 		}
 
diff --git a/tests/Fixtures.php b/tests/Fixtures.php
deleted file mode 100644
index 8d44eec..0000000
--- a/tests/Fixtures.php
+++ /dev/null
@@ -1,152 +0,0 @@
-<?php
-namespace AfricasTalking\SDK\Tests;
-
-class Fixtures
-{
-    public static $username = 'sandbox';
-    public static $apiKey = '6bbb419495456a2951031a0546f399cbb3d2ca629db5714f763ecf8b66544dbb';
-    public static $dateOfBirth = '';
-    public static $accountName = 'Test Bank Account';
-    public static $accountNumber = '';
-    public static $phoneNumber = '+254724486439';
-    public static $multiplePhoneNumbersSMS = ['+254724486439', '+254724567567', '+254724567569'];
-    public static $voicePhoneNumber = '+254724486439';
-    public static $voicePhoneNumber2 = '+254724486439';
-    public static $narration = 'Test Payment';
-    public static $shortCode = '99999';
-    public static $mediaUrl = 'http://thesoundeffect.com/music/mp3/AintTooProudToBeg.mp3';
-    public static $amount = '60';
-    public static $airtimeAmount = 'KES 60';
-    public static $currencyCode = 'KES';
-    public static $currencyCode2 = 'NGN';
-    public static $productName = 'TestProduct';
-    public static $provider = 'ATHENA';
-    public static $transferType = '';
-    public static $destinationChannel = '456789';
-    public static $destinationAccount = 'pweza';
-    public static $paymentCard = [
-        'number' => '4111111111111111',
-        'cvvNumber' => 654,
-        'expiryMonth' => 7,
-        'expiryYear' => 2019,
-        'authToken' => '2345',
-        'countryCode' => 'NG',
-    ];
-    public static $bankCode = '';
-    public static $bankAccount = [
-        'accountName' => 'Test Bank Account',
-        'accountNumber' => '1234567890',
-        'bankCode' => 234001,
-        'dateOfBirth' => ''
-    ];
-    public static $metadata = ['name' => 'Lip Gallagher'];
-    public static $transactionId = 'ATPid_SampleTxnId1';
-    public static $otp = '1234';
-    public static $bankCheckoutToken = '';
-    public static $B2BRecipients = array([
-        'name' => '',
-        'phoneNumber' => '',
-        'amount' => '',
-        'providerChannel' => '',
-        'reason' => ''
-    ]);
-
-    public static $B2CRecipients = array([
-        'name' => 'PB',
-        'phoneNumber' => '254724486449',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ]);
-    
-    public static $ElevenB2CRecipients = array([
-        'name' => 'PB',
-        'phoneNumber' => '254724486449',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB1',
-        'phoneNumber' => '254724486440',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB2',
-        'phoneNumber' => '254724486441',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB3',
-        'phoneNumber' => '254723486549',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB4',
-        'phoneNumber' => '254723486449',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB5',
-        'phoneNumber' => '254724486454',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB6',
-        'phoneNumber' => '254724486446',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB7',
-        'phoneNumber' => '254724486400',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB8',
-        'phoneNumber' => '254724486408',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB9',
-        'phoneNumber' => '254724486409',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    [
-        'name' => 'PB10',
-        'phoneNumber' => '254724486410',
-        'amount' => '60',
-        'currencyCode' => 'KES',
-        'reason' => 'SalaryPayment',
-        'metadata' => ['notes' => 'Salary for January 2018']
-    ],
-    );
-}
\ No newline at end of file