Add 'string-tries-sml/' from commit 'd056e08ce768e014ab409c7f63e8fd0adfc1dff2'

git-subtree-dir: string-tries-sml
git-subtree-mainline: dba78da7ec
git-subtree-split: d056e08ce7

string-tries-sml/bench/insert-bro-tree.sml

@@ -0,0 +1,11 @@
+structure InsertBroTree =
+struct
+  fun main () =
+  let
+    val endTree = Vector.foldl BroTree.insert BroTree.empty WordsList.words
+  in
+    ()
+  end
+end
+
+val _ = InsertBroTree.main ()