Update README.md

Author: thieng101

README.md

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 # Double-Tree-Program
 -Implement a binary search tree in a binary search tree and perform various takes on it (such as search, deletion, insertion, calculation and so on)).\
--Create a forest representing by a main tree.Each branches represnts integrated communities of plants, animals and fruits, and so on. Then, embedded a smaller tree for each branches representing units or objects.\
+-Create a forest representing by a main tree.Each branches presents integrated communities of plants, animals and fruits, and so on. Then, embedded a smaller tree for each branches representing units or objects.\
 -For example: in branch "animal" there is a BST where each node is different types of animal.