moved some code from Ivory to list/read/write/delete files from locations
added a default LocationIO object
removed the use of SelfType
use S3Pattern to list files and check for existence
use Temporary functions from mundane-io and saws
use determine to check if a S3 location is a directory
use the configuration from TemporaryConf
Merge pull request #41 from ambiata/topic/location-io

Moved some code from Ivory to list/read/write/delete files from locations