Allowing you to configure the name of the S3 backup directory through an environment variable
Fixing a bug with the Fog interface

The script was looking at all of the files in the specified bucket when determining which ones to delete. I only want it to look under the designated backup directory, so I added the directory prefix when it's considering which files to delete.
Correcting a comment
Adding explanation of S3_BACKUP_DIR parameter
Adding myself to Gem contributors
Bumping the version number
Merge pull request #17 from strayduy/configurable-s3-directory-name

Making the name of the S3 backup directory configurable