Add rsync progress flag

[gromain]

Hi,

A little request for improvement. Rsync supports displaying progress (with the flag --progress). It would be nice to include a flag to add this to the command. I think it would make a lot of sense to offer that to the user (that doesn't necessarily wants to see the list of files being copied over go on and on, but still wants to have an overview of where things stand).

Thanks!

[framps]

Given the fact PRs are no handled I don't create a PR for this. But there is a simple mitigation of your issue: Just change this line and append --progress separated with a space :wink: