Update sync-backup.md

Author: isedwards

sync-backup.md

@@ -1,6 +1,8 @@
-Using [GRsync](http://www.opbyte.it/grsync/) GUI for rsync but could also try RSyncOSX.
+In had trouble installing the [GRsync](http://www.opbyte.it/grsync/) GUI for rsync on MacOS, so I'm currently using the mac-only [RSyncUI](https://github.com/rsyncOSX/RsyncOSX#install-by-homebrew) instead.
 
-Interested in [syncthing](https://syncthing.net) - continuous file synchronization for private cloud) backup.
+I'm also nterested in [syncthing](https://syncthing.net) - continuous file synchronization for private cloud) backup.
 
+<!--
 - [Unison](https://github.com/bcpierce00/unison)
 - Syncback only available on Windows, is closed source and doesn't appear to be free anymore
+-->