fix starting count in create document mode
fix starting count in create document mode

Change-Id: I55d2f46d35db0818df5c544ede13cef191e2f818
Reviewed-on: http://review.couchbase.org/52566
Reviewed-by: Manik Taneja <ab0e3979665ad7ee15da870324c623916e4596d3@couchbase.com>
Tested-by: Manik Taneja <ab0e3979665ad7ee15da870324c623916e4596d3@couchbase.com>

couchbase/go-couchbase,nimishzynga/go-couchbase