[sfPropel15Plugin] Documenting new generator features
[sfPropel15Plugin] Documenting new generator features

git-svn-id: 5328d55da731c7b3abbe4e40105e1c39a9c375f3@28664 ee427ae8-e902-0410-961c-c3ed070cd9f9

Symfony-Plugins/sfPropel15Plugin