DataStructures/Linear/LinkedList/LLNode.h: The class declaration/definition for the templated linked list node. The building block of the linear data structures (linked list, queue, stack, etc.).

DataStructures/Linear/LinkedList/LinkedList.h: The class declaration/definition for the templated linked list. Builds upon the linked list node class (LLNode) to create a doubly-linked list.

DataStructures/Linear/Queue/Queue.h: The class declaration/definition for the templated queue. Implemented atop a linked list.

DataStructures/Linear/Stack/Stack.h: The class declaration/definition for the templated stack. Implemented atop a linked list.

README.md: Updated readme featuring an expanded description of the project and a todo list.