Refactored for Couchbase

- Refactored project to work with Couchbase.
Updated documentation

Updated documentation
Fixed typos

Fixed typos that where not visible due to error configuration.
Nonce expiration date

- Expire (mark for deletion) the nonce after five minutes
updated readme

removed need for scheduler which deletes the nonce
Merge pull request #7 from wscheper/master

Couchbase version