Merge pull request #3 from davidyell/missing-exception

Resolves #2

Author: jadb

src/Exception/UnimplementedWebserviceMethodException.php

@@ -0,0 +1,13 @@
+<?php
+namespace Muffin\Webservice\Exception;
+
+use Cake\Core\Exception\Exception;
+
+class UnimplementedWebserviceMethodException extends Exception
+{
+
+    /**
+     * {@inheritDoc}
+     */
+    protected $_messageTemplate = 'Driver (`%s`) does not implement `%s`';
+}