Merge pull request #1 from AuthorizeNet/master

sync up with parent

Author: adavidw

.travis.yml

@@ -15,7 +15,7 @@ before_script:
 script:
     - vendor/phpunit/phpunit/phpunit --coverage-clover=coverage.clover
     - cd sample-code-php
-    - composer install --prefer-dist --ignore-platform-reqs
+    - composer install --prefer-dist
     - vendor/phpunit/phpunit/phpunit test-runner.php .
 
 after_script:

README.md

@@ -12,7 +12,7 @@ Proprietary, see the provided `license.md`.
 
 ## Requirements
 
-- PHP 5.3+ *(>=5.3.10 recommended)*
+- PHP 5.5+
 - cURL PHP Extension
 - JSON PHP Extension
 - SimpleXML PHP Extension