Fetch and delete etc.
Merge remote-tracking branch 'refs/remotes/origin/master' into hg-s3-download

Conflicts:
	app/s3/S3.scala
Curry the functions so scala can do something useful like haskell
Private method
Merge remote-tracking branch 'refs/remotes/origin/master' into hg-s3-download
Make method private
Merge pull request #2 from guardian/hg-s3-download

S3 List contents and delete etc.