bump to dev ver
diff --git a/docs/awesome_table_in_pdf.Rmd b/docs/awesome_table_in_pdf.Rmd
index 467bc0f..fc47b0d 100644
--- a/docs/awesome_table_in_pdf.Rmd
+++ b/docs/awesome_table_in_pdf.Rmd
@@ -177,6 +177,7 @@
                  "Group 1 contains mpg, cyl and disp", 
                  "Group 2 contains hp, drat and wt"), 
                notation = "symbol") %>%
+  group_rows("Group 1", 4, 5) %>%
   landscape()
 ```