add add_footnote_adv (temp name) for html table
diff --git a/NAMESPACE b/NAMESPACE
index 92a87a8..0ae29ae 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -2,6 +2,7 @@
 
 export("%>%")
 export(add_footnote)
+export(add_footnote_adv)
 export(add_header_above)
 export(add_indent)
 export(cell_spec)