updating the Readme file and cleaning the unnecessary files: htune_EmulatingMultiMetric_csv.R, htune_EmulatingSCM.R, htune_EmulatingSCM_CS2.R, htune_csv2Rdata_many-met.R, htune_ncdf2Rdata.R ; adding some python files that allow to draw vertical profiles of different variables for LES and SCMs cf Readme -- Fleur --