allow for rsync only mode

[wellenvogel]

Hi Marcin, I found your script being really cool. For a long time I was looking for a simple solution to sync some folders to my cloud provider - strato here in germany. They have a nice rsync interface - but no direct ssh access. So I made some changes to allow for a rsync only operation (-n on init). I also added some wait/timeout for remote locks. Additionally I added some -b basedir for any run - this allows for easy execution from any directory. Still on the way with some testing. Maybe you are interested... Anyway many thanks for the great script. Best regards Andreas