[Workflow] Added missing docblock

Author: Padam87

src/Symfony/Component/Workflow/DefinitionBuilder.php

@@ -79,6 +79,9 @@ public function addPlaces(array $places)
         }
     }
 
+    /**
+     * @param Transition[] $transitions
+     */
     public function addTransitions(array $transitions)
     {
         foreach ($transitions as $transition) {

src/Symfony/Component/Workflow/Registry.php

@@ -30,6 +30,12 @@ public function add(Workflow $workflow, $className)
         $this->workflows[] = array($workflow, $className);
     }
 
+    /**
+     * @param object      $subject
+     * @param string|null $workflowName
+     *
+     * @return Workflow
+     */
     public function get($subject, $workflowName = null)
     {
         $matched = null;