Several Bioconductor packages are required for this tutorial. To install them, execute
the following lines in the R console. Please also make sure that you have a recent R version
installed on your system. R versions 3.2.x or higher are recommended.
source("https://bioconductor.org/biocLite.R")
biocLite(c("Biostrings", "GenomicRanges", "GenomicRanges", "rtracklayer", "systemPipeR", "seqLogo", "ShortRead"))