Hi Kaushik,
Yeah, in fact I would strongly recommend you to use version 0.9 that is already imported and fully available in AWS as a public snapshot.
This is the id of the snapshot: snap-1185fd0f (it's in eu-west1 region)
Regarding the documentation you're right, it's quite messy at the moment but we have a major update going on right now and we're focusing on the development of the new version together with its documentation. (Be ready for a new version full of improvements and major changes pretty soon!)
Anyways, don't hesitate to ask any question you may have about how to use Bio4j.
Cheers,
Pablo