Refactoring Errors

It's the third error than pass Travis, there is a code coverage's problem in unit test or something else.

Anyway should be good if we have tag for versioning this, like put version 1.0 before https://github.com/KnpLabs/DoctrineBehaviors/commit/a2bd9616968358ba7d001f89c7c3606924f67dc7

Because for the moment every body use dev-master and we see that is not safe.

There is may be other errors, but for me, I rollback in my composer to dev-master#956ff05519 .