Add option to delete existing screenshots folder

[ZevEisenberg]

When I'm trying to get something new to work, it's annoying to keep having to delete the previous run's output by hand. It would be nice to have a prompt: “Would you like to delete the images from the previous run? Y/n.” And perhaps an argument that, when passed, auto-deletes the results.

[ZevEisenberg]

It could also auto-delete, but move the folder to the Trash (with the date appended to the name, to avoid overwriting files with duplicate names).

[jonathanpenn]

I'm a bigger fan of the question to delete vs automatically moving to trash. Especially if you accidentally type in the name of an existing directory by mistake!