Updated rcas.msigdb.R: new 'species' parameter added.
Updated rcas.msigdb.R: new 'species' parameter added.

Added a 'species' parameter to be able to run the MSIGDB module for human, mouse, fly, and worm.
Necessary R package dependency additions are org.Ce.eg.db, org.Mm.eg.db, and org.Dm.eg.db.
Necessary 'base' file dependency additions are 'c2.cp.v5.0.entrez.ce10.gmt' for worm, c2.cp.v5.0.entrez.mm9.gmt for mouse, and c2.cp.v5.0.entrez.dm3.gmt for fly.
Based on these changes, RCAS.snakefile must be modified to accommodate 'species' parameter

BIMSBbioinfo/RCAS-tools,dyusuf/RCAS,dyusuf/RCAS,BIMSBbioinfo/RCAS-tools,dyusuf/RCAS,BIMSBbioinfo/RCAS-tools