Fix expiring old backups

This got (accidentally?) turned off in a previous commit.
Merge pull request #30 from Meldanya/master

Fix expiring old backups
Fix minor typos in the README.md
Merge pull request #31 from musically-ut/patch-1

Fix minor typos in the README.md
Update README.md

Update compatibility.
Update README.md

Clarify advantages/disadvantages
Update README.md
More complete command
Merge branch 'master' of https://github.com/laurent22/rsync-time-backup
Update README.md

Added complete license
Merge commit '12930a24ebcac25988678c17177cf05323677f26' into upstream-merge
Merge commit '60c04350fc8d98baade4c8dc08392e4dc3e4aa15' into upstream-merge
Merge commit '2c9805b450cc4d0b67f22de55474428816a44d84' into upstream-merge
Merge commit '45a90310e3b1f3b8cc45371cb8eca775ca4e7747' into upstream-merge
Merge commit '1384fdfd1cb0f01e804d57b69ac1e28247511677' into upstream-merge
Merge commit '1a3dc0b144183926435cc6bfd3c2942e6cc30361' into upstream-merge

Conflicts:
	rsync_tmbackup.sh
Merge remote-tracking branch 'laurent22/master' into upstream-merge