Add test that NbClust gets iris right clusters
Add test that NbClust gets iris right clusters

nsh87/receptormarker,catterbu/receptormarker,catterbu/receptormarker,nsh87/receptormarker,nsh87/receptormarker,catterbu/receptormarker,nsh87/receptormarker,catterbu/receptormarker,catterbu/receptormarker,nsh87/receptormarker