Update npm package info

Change-Id: I9aef99660ec040dc3c697537c141ac793e3351c0
Reviewed-on: http://review.couchbase.org/23870
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>