Issue #52 resolved
I renamed plot.cent as plot.centroid
- should plot.star only applied when argument group is provided? OK
- should plot.centroid only applied when argument group is provided? OK
- add examples with plot.star and plot.centroid in running test OK, partly
- update help file OK
- Indicate the centroid as a thick black 'star' otherwise it does not show on its own
Start from the 3 files named 'issue plotIndiv in devel.graphique'