Merge pull request #9 from maniktaneja/master

UPR implementation for go-couchbase
Merge pull request #10 from maniktaneja/master

Fix upr_restart example
GetVBmap() and minor fixes.

- fixed upr-examples.
- use references for UprEvent.
- UprEvent:SeqNo changed to UprEvent:Seqno.
- Added GetVBmap() API for bucket reference.
Minor cosmetic updates to upr_feed example.
Merge pull request #11 from maniktaneja/master

MB:11248. Provide API to retrieve buckets and passwords using Administrator password
Merge pull request #13 from maniktaneja/master

Refresh bucket on connection error
UPR_BUFFER Ack fixes + Check len of vbucket map