Update composer.json & travis.yml

.travis.yml

@@ -1,9 +1,24 @@
 language: php
 php:
-    - '5.4'
-    - '5.5'
-    - '5.6'
-    - '7'
+    - 5.4
+    - 5.5
+    - 5.6
+    - 7
+    - 7.1
+    - 7.2
+
+matrix:
+    allow_failures:
+        php: 7.1
+        php: 7.2
+
+# install packages explicitly
+install:
+  - composer self-update && composer install
+
+# show me what phpunit version we are running
 before_script:
-    - wget https://phar.phpunit.de/phpunit-3.7.phar
-script: cd test-cases && php ../phpunit-3.7.phar --bootstrap bootstrap.php
+  - vendor/bin/phpunit --version
+
+# run the test suite
+script: cd test-cases && php ../vendor/bin/phpunit --bootstrap bootstrap.php

composer.json

@@ -3,15 +3,21 @@
     "type": "library",
     "description": "An open-source library to connect to Amazon's MWS web services in an object-oriented manner, with a focus on intuitive usage.",
     "license": "Apache-2.0",
-    "keywords": ["API", "Amazon", "PHP"],
-    "require":{
-                "php": ">=5.4",
-                "ext-curl": "*"
+    "keywords": [
+        "API",
+        "Amazon",
+        "PHP"
+    ],
+    "require": {
+        "php": ">=5.4",
+        "ext-curl": "*"
     },
     "require-dev": {
-                "phpunit/phpunit": "3.7.*"
-                   },
+        "phpunit/phpunit": ">=4.0.0, <6.0.0"
+    },
     "autoload": {
-        "classmap": ["includes/classes/"]
+        "classmap": [
+            "includes/classes/"
+        ]
     }
 }