1 options(repos=structure(c(CRAN="http://cran.wustl.edu/")))
2 if (!requireNamespace("devtools")) {
3 install.packages("devtools")
5 if (!requireNamespace("roxygen2")) {
6 install.packages("roxygen2")
8 if (!requireNamespace("knitr")) {
9 install.packages("knitr")
11 if (!requireNamespace("markdown")) {
12 install.packages("markdown")
15 devtools::install_dev_deps()