changed name of volcanoplot2.png to volcano.png
changed name of volcanoplot2.png to volcano.png

SBCS-Bioinformatics/R-Core,MPriebe/R-Core,MPriebe/R-Core,sureshhewabi/R-Core,SBCS-Bioinformatics/R-Core,sureshhewabi/R-Core,Anisatu/R-Core,Anisatu/R-Core,SBCS-Bioinformatics/R-Core