[R] R Studio: Run script upon saving or exiting

[Jan Kacaba]

Dear R help,

I would like to run script upon saving project files or exiting the R Studio.
For example I would like to backup whole project in another directory.
The backup directory should be named such that incremental version
number will added to project name.

Is it somehow possible?  Even better would be if someone can also
quickly go through file versions.