Merge pull request #18 from datastructures-js/development

v3.1.0

Author: eyas-ranjous

index.js

@@ -1,3 +1,4 @@
 const BinarySearchTree = require('./src/binarySearchTree');
+const AvlTree = require('./src/avlTree');
 
-module.exports = { BinarySearchTree };
+module.exports = { BinarySearchTree, AvlTree };