print a helpful message when droplet can't be deleted
print a helpful message when droplet can't be deleted

bryanl/doit,digitalocean/doctl,xmudrii/doctl,bryanl/doit,digitalocean/doctl,bryanl/docli,bryanl/docli,xmudrii/doctl,bryanl/docli,bryanl/doit,bryanl/doit