Add --backup-switch that is also described in the README
Add --backup-switch that is also described in the README

tamsky/tablesnap,ethanmiller/tablesnap,juiceblender/tablesnap,russss/tablesnap,betable/tablesnap,JeremyGrosser/tablesnap,betable/tablesnap,JeremyGrosser/tablesnap,russss/tablesnap,curalate/tablesnap,juiceblender/tablesnap,heroku/tablesnap