Perhaps add verbosity option to downloading of search results

[pmallas]

Hello,

When the using asf_search to download images, if the s/w finds the image, it issues a warning and skips the download. I would like to request an additional keyword in the download arguments: 'verbose'

The current, default behavior would be with a default argument: 'verbose= True'

But you could turn off the warnings by changing: 'verbose = False'

Thanks,
Paul