QC.R: added PCoA of samples
QC.R: added PCoA of samples

mpg-age-bioinformatics/rnaseq-tools,mpg-age-bioinformatics/rnaseq-tools,mpg-age-bioinformatics/htseq-tools,mpg-age-bioinformatics/rnaseq-tools,mpg-age-bioinformatics/htseq-tools,mpg-age-bioinformatics/htseq-tools