[pacman-dev] Scripts bombing with no args

[Dan McGee]

Allan or Dave, mind taking a look at this? We should show usage info,
as rankmirrors and pacman-key do without args, instead of this silly
behavior.

-Dan

dmcgee at galway ~/projects/pacman (master)
$ ./scripts/repo-add
==> ERROR: '' does not have a valid archive extension.

dmcgee at galway ~/projects/pacman (master)
$ ./scripts/pkgdelta
./scripts/pkgdelta: line 147: $1: unbound variable