Updated: Indexing Document Asynchonously(onaccept) and Deleting the indexex ascychrnously(ondelete)

I have made changes in s3_updates_check also as you asked for and also deployment_settings.
One other thing: there are other two dependency: antiword and pdfminer
These are for extracting text from .DOC and .PDF respectively.
So, I think, this would be covered in the installation script, where it would install these dependencies also.

Regards,
vishrut009