tests/travis/r_vignettes.R - mxnet-test - Git at Google

 fnames <- list.files("R-package/vignettes/", pattern="*.Rmd")
 sapply(fnames, function(x){
 	knitr::purl(paste0("R-package/vignettes/", x))
 	})
	fnames <- list.files("R-package/vignettes/", pattern="*.Rmd")
	sapply(fnames, function(x){
	knitr::purl(paste0("R-package/vignettes/", x))
	})