UFO Project - Including all functions

[Ali-Parandeh]

New solution for the UFO project which has all the bonus challenges implemented:

1. Wrapper to prompt the player if they want to play again
2. Vector of codewords that can be extended to as many words as needed
3. Printing the codeword at the end of each game
4. Insensitivity to character case input
5. Documentation on the project description, setup, usage and extensions.

[WWWW-coder]

finish the pull requests function

[CLAassistant]

All committers have signed the CLA.