ServiceNotFoundException when integrating with JMSSerializerBundle

[HelloGrayson]

After adding the JMSSerializerBundle from the fork prescribed in the README and adding the bundle to the AppKernel, a service not found exception is thrown for jms_serializer_extra.serializer_factory.

To reproduce:

1. Run git submodule add https://github.com/lsmith77/SerializerBundle.git vendor/bundles/JMS/SerializerBundle,
2. Add new JMS\SerializerBundle\JMSSerializerBundle() to app/AppKernel.php
3. Get Exception below

ServiceNotFoundException: You have requested a non-existent service "jms_serializer_extra.serializer_factory"

[lsmith77]

you need to use the https://github.com/lsmith77/SerializerBundle/tree/use_core branch.

[HelloGrayson]

Nice. Is there anyway to hint to a git submodule to check out that branch? From a deploy standpoint I'm not sure I'll be able to manage the switching to that branch after checking out... Thanks

[lsmith77]

Well in the Symfony Standard syntax you just need to specify a version:
https://github.com/symfony/symfony-standard/blob/master/deps#L12

For submodules all you have to do is check out the given branch and then commit the sha that is set.

[HelloGrayson]

ok good deal. thanks.