revisions to td-toolbelt

- `caskroom_only true` is not needed
- uninstall via `:pkgutil` instead of `:files`
- commented-out future `zap` stanza
- `container_type :naked` since no action is taken on the container
- full path to `mv`
- use `--` after `mv` to disambiguate files
- don't recycle `title` for the filename