BridgeRDataSetFromRaw calculates the relative RPKM values
compared with 0hr, importing tab-delimited txt file.
BridgeRDataSetFromRaw(inputFile, group = c("Control", "Knockdown"), hour = c(0, 1, 2, 4, 8, 12), cutoff = 0.1, cutoffBelow = 0.1, inforColumn = 4, save = T, outputPrefix = "BridgeR_1")