add README

README.md

+Installing R Libraries/Packages
+=====
+
+#### List of R (base) packages that should be installed
+
+* tidyverse
+* readr
+* parallel
+* Hmisc
+* Rcpp
+* ggpubr
+* viridis
+
+Install them via
+
+```
+module add R
+R
+install.packages('tidyverse')
+install.packages('readr')
+install.packages('parallel')
+install.packages('Hmisc')
+install.packages('Rcpp')
+install.packages('ggpubr')
+install.packages('viridis')
+```
+
+When you install these packages, it will ask
+
+```
+Would you like to use a personal library instead?  (y/n)
+```
+
+Type **y**
+
+It will then ask you to select a CRAN mirror
+
+```
+--- Please select a CRAN mirror for use in this session ---
+HTTPS CRAN mirror
+
+ 1: 0-Cloud [https]                   2: Algeria [https]
+ 3: Australia (Canberra) [https]      4: Australia (Melbourne 1) [https]
+ 5: Australia (Melbourne 2) [https]   6: Australia (Perth) [https]
+ 7: Austria [https]                   8: Belgium (Ghent) [https]
+ etc
+```
+
+Look for the `USA (TX 1)` entry - usually **78**
+
+```
+USA (TX 1) [https]
+```
+
+Type the **number** of this CRAN mirror  
+
+To quit out of R
+
+```
+q()
+Save workspace image? [y/n/c]:
+```
+
+Type **n**
+
+
+#### List of R Bioconductor packages that should be installed
+
+* RUVSeq
+* edgeR
+* DESeq2
+
+Install them via
+
+```
+source("https://bioconductor.org/biocLite.R")
+biocLite('RUVSeq')
+biocLite('edgeR')
+biocLite('DESeq2')
+```