runff 1.0 commit

lib/aws/Aws/Sfn/Exception/SfnException.php

@@ -0,0 +1,9 @@
+<?php
+namespace Aws\Sfn\Exception;
+
+use Aws\Exception\AwsException;
+
+/**
+ * Represents an error interacting with the **AWS Step Functions** service.
+ */
+class SfnException extends AwsException {}