Dev matthieu
Created by: MarionBrandolini
changes in DESCRIPTION, README, NEWS suppression of doc/rchemo_functions_github.md addition of the pcasph function => changes in the files: zfunction.R, pcasph.R, pca.Rd
Created by: MarionBrandolini
changes in DESCRIPTION, README, NEWS suppression of doc/rchemo_functions_github.md addition of the pcasph function => changes in the files: zfunction.R, pcasph.R, pca.Rd