updated rcas.Rmd
updated rcas.Rmd

- suppress library loading messages
- define new motif summary table function: getMotifSummaryTable
- replace NA values in table_of_genes
- fix a bug in exon_intron_junction subsetting (width >= 100 instead of width > 100)

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