Add exclude param
I needed this because I am "force synching" folders already synched by btsync, which has a ".sync" hidden folder which should not be checked.
If it is not a proper PR for this project, please let me now.
Bump
Sorry for being so late, must have missed the notification.
The request looks good. I'll take care of it soon.
Have you already signed the CLA as per the Contributing paragraph in the README (https://github.com/google/adb-sync/blob/master/README.md)?
This was the only thing missing for me too. For when I backup my internal storage I don't want to copy TWRP and some huge folders. Thank you for making this.