R版本：3.2.2
install.packages("devtools")
download and install Rtools 3.3 from http://cran.r-project.org/bin/windows/Rtools/ and then run find_rtool
library(devtools)
install_github("genomicsclass/dagdata")
install_github("ririzarr/rafalib")
原文：http://www.cnblogs.com/chenwenyan/p/4890191.html