Added functionality to backup the repository (before it is updated) to a
local file during the 'deploy-meta' task. The repo is saved to a file with
name <repo-name>-<time-in-millis>.xml in directory ~/.lein/lein-bundle/repo-backups.
repo-name will be "unnamed" if the repo has no name.
Changed timestamp in repo backup file name to be something a little more
human readable.
Version 0.1.1
Version 0.1.2-SNAPSHOT