Workaround for postgres (see cakephp/migrations#370)

Author: rchavik

config/Seeds/RolesSeed.php

@@ -48,9 +48,11 @@ class RolesSeed extends AbstractSeed
 
     public function run()
     {
+        $this->getAdapter()->commitTransaction();
         $Roles = TableRegistry::get('Croogo/Users.Roles');
         $entities = $Roles->newEntities($this->records);
         $result = $Roles->saveMany($entities);
+        $this->getAdapter()->beginTransaction();
     }
 
 }

config/Seeds/UsersSeed.php

@@ -20,9 +20,11 @@ class UsersSeed extends AbstractSeed
 
     public function run()
     {
+        $this->getAdapter()->commitTransaction();
         $Users = TableRegistry::get('Croogo/Users.Users');
         $entity = $Users->newEntity($this->record);
         $result = $Users->save($entity);
+        $this->getAdapter()->beginTransaction();
     }
 
 }