README.md Add binary search tree python link

This adds the binary search tree python implementation link to code
folder.
Closes NITSkmOS#486

README.md

@@ -38,7 +38,7 @@ This repository contains examples of various algorithms written on different pro
 | [Stack](https://en.wikipedia.org/wiki/Stack_(abstract_data_type))                               | [:octocat:](stack/C )                 |                                       | [:octocat:](stack/Java)               | [:octocat:](stack/Python)             |
 | [Linear Linked List](https://en.wikipedia.org/wiki/Linked_list)                                 | [:octocat:](linked_list/C)            | [:octocat:](linked_list/Cpp)          | [:octocat:](linked_list/Java)         | [:octocat:](linked_list/Python)       |
 | [AVL Tree](https://en.wikipedia.org/wiki/AVL_tree)                                              | [:octocat:](avl_tree/C)               | [:octocat:](avl_tree/Cpp)      | [:octocat:](avl_tree/Java)            | [:octocat:](avl_tree/Python)          |
-| [Binary Search Tree](https://en.wikipedia.org/wiki/Binary_search_tree)                          |                                       | [:octocat:](binary_search_tree/Cpp)                                       |                                       |                                       |
+| [Binary Search Tree](https://en.wikipedia.org/wiki/Binary_search_tree)                          |                                       | [:octocat:](binary_search_tree/Cpp)                                       |                                        |      [:octocat:](binary_search/Python)                                 |
 | [Fenwick Tree](https://en.wikipedia.org/wiki/Fenwick_tree)                                      |                                       | [:octocat:](fenwick_tree/Cpp)         | [:octocat:](fenwick_tree/java)        | [:octocat:](fenwick_tree/Python)      |
 | [Doubly Linked List](https://en.wikipedia.org/wiki/Doubly_linked_list)                          | [:octocat:](doubly_linked_list/c)     |                                       |                                       |                                       |