CBQE-0: Disable “application downloaded from the internet” message in Mac OS X

to remove the the warning message for "/Applications/Couchbase\ Server.app", we type the following command:

xattr -d -r com.apple.quarantine /Applications/Couchbase\ Server.app

Change-Id: I26934983e995f8da6f723f5f77e9d773da80a270
Reviewed-on: http://review.couchbase.org/38140
Reviewed-by: Tommie McAfee <tommie@couchbase.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>