Implemented dynamic programming (Closes CoffeelessProgrammer#12)

Implemented invert binary tree (Bonus CoffeelessProgrammer#9)

Implemented simple graph (Closes CoffeelessProgrammer#8)

All core data structures are implemented and importable.

Two new data structures: Singly & Doubly LLs

Implemented queue (Closes CoffeelessProgrammer#4)

The following data structures have been implemented: Array, Hash Table, Stack, Queue, Binary Search Tree. All are available for import.

Completed BST remove method (Closes CoffeelessProgrammer#7)

BinarySearchTree implementation requires testing. Updated repo READMEs. Trees section of course complete.

Updated project README files

Arrays and Hash Tables sections complete