I assure you the project is alive and well. There is active development
on the ProductBundle, InventoryBundle and the CartBundle. The
CheckoutBundle will have code added this week and we will be working on
using JMSPaymentBundle with the project in the next week also. The
StoreBundle is being put together to give an example of a working store.
I will agree the documentation is light, but there are quite a few test
so you can get an idea of how to use the bundles from that. I'm not sure
where the PR is from July, but if you'll post a link to it, I'll look
into it.
I won't promise the speed of development, but if you look at the various
bundles, the level of impact is going up and having another site using
Vespolina will increase that growth.
There is usually a couple of us hanging out on freenode.net #vespolina
so between this list and the irc you should be able to get enough
information to help get you going in the right direction.
Welcome to the project!
Richard