To submit to CRAN we cannot use more than 2 threads in our examples/vignettes

R-package/R/xgb.load.R

@@ -10,7 +10,7 @@
 #' train <- agaricus.train
 #' test <- agaricus.test
 #' bst <- xgboost(data = train$data, label = train$label, max.depth = 2, 
-#'                eta = 1, nround = 2,objective = "binary:logistic")
+#'                eta = 1, nthread = 2, nround = 2,objective = "binary:logistic")
 #' xgb.save(bst, 'xgb.model')
 #' bst <- xgb.load('xgb.model')
 #' pred <- predict(bst, test$data)