diff --git a/composer.json b/composer.json
index e985c5e..d3cda43 100755
--- a/composer.json
+++ b/composer.json
@@ -7,23 +7,8 @@
     "license": "MIT",
     "authors": [
         {
-            "name": "Stephen Afam-Osemene",
-            "email": "s.afamo@africastalking.com",
-            "homepage": "https://www.africastalking.com"
-        },
-        {
-            "name": "Ian Juma",
-            "email": "ijuma@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"
         }
     ],
diff --git a/composer.lock b/composer.lock
index 3a6d36a..2c0c0fc 100644
--- a/composer.lock
+++ b/composer.lock
@@ -241,32 +241,32 @@
     "packages-dev": [
         {
             "name": "doctrine/instantiator",
-            "version": "1.0.5",
+            "version": "1.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d"
+                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/8e884e78f9f0eb1329e445619e04456e64d8051d",
-                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda",
+                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3,<8.0-DEV"
+                "php": "^7.1"
             },
             "require-dev": {
                 "athletic/athletic": "~0.1.8",
                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpunit/phpunit": "~4.0",
-                "squizlabs/php_codesniffer": "~2.0"
+                "phpunit/phpunit": "^6.2.3",
+                "squizlabs/php_codesniffer": "^3.0.2"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "1.2.x-dev"
                 }
             },
             "autoload": {
@@ -291,7 +291,7 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2015-06-14T21:17:01+00:00"
+            "time": "2017-07-22T11:58:36+00:00"
         },
         {
             "name": "myclabs/deep-copy",
@@ -594,16 +594,16 @@
         },
         {
             "name": "phpspec/prophecy",
-            "version": "1.7.3",
+            "version": "1.7.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpspec/prophecy.git",
-                "reference": "e4ed002c67da8eceb0eb8ddb8b3847bb53c5c2bf"
+                "reference": "dfd6be44111a7c41c2e884a336cc4f461b3b2401"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/e4ed002c67da8eceb0eb8ddb8b3847bb53c5c2bf",
-                "reference": "e4ed002c67da8eceb0eb8ddb8b3847bb53c5c2bf",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/dfd6be44111a7c41c2e884a336cc4f461b3b2401",
+                "reference": "dfd6be44111a7c41c2e884a336cc4f461b3b2401",
                 "shasum": ""
             },
             "require": {
@@ -615,7 +615,7 @@
             },
             "require-dev": {
                 "phpspec/phpspec": "^2.5|^3.2",
-                "phpunit/phpunit": "^4.8.35 || ^5.7"
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5"
             },
             "type": "library",
             "extra": {
@@ -653,7 +653,7 @@
                 "spy",
                 "stub"
             ],
-            "time": "2017-11-24T13:59:53+00:00"
+            "time": "2018-02-19T10:16:54+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -906,16 +906,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "6.5.6",
+            "version": "6.5.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "3330ef26ade05359d006041316ed0fa9e8e3cefe"
+                "reference": "6bd77b57707c236833d2b57b968e403df060c9d9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/3330ef26ade05359d006041316ed0fa9e8e3cefe",
-                "reference": "3330ef26ade05359d006041316ed0fa9e8e3cefe",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/6bd77b57707c236833d2b57b968e403df060c9d9",
+                "reference": "6bd77b57707c236833d2b57b968e403df060c9d9",
                 "shasum": ""
             },
             "require": {
@@ -986,7 +986,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2018-02-01T05:57:37+00:00"
+            "time": "2018-02-26T07:01:09+00:00"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
diff --git a/example/composer.json b/example/composer.json
index 054f5ca..e149439 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.*",
+        "africastalking/africastalking": "2.0.0",
         "altorouter/altorouter": "1.1.0"
     }
 }
\ No newline at end of file
diff --git a/example/composer.lock b/example/composer.lock
index 3e41a5e..cb5a88a 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": "08ce256927630035a33964f9ad1aa7ed",
+    "content-hash": "73fc49b76ba9d8ba0b26bae9dec6da19",
     "packages": [
         {
             "name": "africastalking/africastalking",
-            "version": "dev-develop",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/AfricasTalkingLtd/africastalking-php.git",
-                "reference": "2424a212c669fb6cc9e8be656bb0c255f2daab15"
+                "reference": "66db63b06dfa99c5674991340ccd58a39ba3591a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/AfricasTalkingLtd/africastalking-php/zipball/2424a212c669fb6cc9e8be656bb0c255f2daab15",
-                "reference": "2424a212c669fb6cc9e8be656bb0c255f2daab15",
+                "url": "https://api.github.com/repos/AfricasTalkingLtd/africastalking-php/zipball/66db63b06dfa99c5674991340ccd58a39ba3591a",
+                "reference": "66db63b06dfa99c5674991340ccd58a39ba3591a",
                 "shasum": ""
             },
             "require": {
@@ -30,8 +30,8 @@
             "type": "library",
             "autoload": {
                 "psr-4": {
-                    "AfricasTalking\\": "src/",
-                    "AfricasTalkingTest\\": "tests"
+                    "AfricasTalking\\SDK\\": "src/",
+                    "AfricasTalking\\SDK\\Tests\\": "tests"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -53,6 +53,11 @@
                     "name": "Paul Bombo",
                     "email": "pbombo@africastalking.com",
                     "homepage": "https://www.africastalking.com"
+                },
+                {
+                    "name": "Salama Balekage",
+                    "email": "sbalekage@africastalking.com",
+                    "homepage": "https://www.africastalking.com"
                 }
             ],
             "description": "Official Africa's Talking PHP SDK",
@@ -66,7 +71,7 @@
                 "ussd",
                 "voice"
             ],
-            "time": "2018-02-05T09:51:03+00:00"
+            "time": "2018-03-07T08:35:13+00:00"
         },
         {
             "name": "altorouter/altorouter",
@@ -354,9 +359,7 @@
     "packages-dev": [],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {
-        "africastalking/africastalking": 20
-    },
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {