got binary tree insert working need to isolate traversal and setup delete

src/main.rs

@@ -3,6 +3,11 @@ mod binary_search;
 mod bubble_sort;
 mod quick_sort;
 mod dijkstras;
+mod queue;
+mod stack;
+mod binary_tree;
+mod min_heap;
+mod weighted_adj_list;
 mod data_structures;
 fn linear_search_demo(){
     println!("-------------------");