Add Sessioninfo

[MaurizioSicorello]

As far as I can tell, there is yet not documentation on the R sessions. This information can be helpful to reproduce analyses later. I usually do the following (althouth there might be better options):

-When all scripts are finalized, run them as another user would run them (e.g. separately, opening a new/clean R session between scripts)
-check they run fine
-call sessionInfo()
-Copy the output to the bottom of the script and comment it out, so it is not run as code

[christianparet]

Got it!

[christianparet]

Issue cleared by @NikeUnv - thanks!