Added cURL

Change-Id: I560b5dcd353a4d5215e869c51a0a8781d98d8f3d
Reviewed-on: http://review.couchbase.org/29269
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>