[add] license

[add] license

[add] remove cardColorAsTuple and checked for bottomCardView's current cardColor case

[add] remove cardColor's unnecessary tuple function

[add] a way to make the text and textColor more fairly random and than barely matching so that white card's correct answer is not always a no, and black card's answer to be yes

[add] screenshot for the game

[add] updated gameDifficulty enum get highScore and get initialMaxTime to just be a read only variable instad of a function

[add] made the app more reliable by removing force unwrapping with ! unless a guard let has been used to confirm value does exists

[add] updated color to textColor for consistent naming throughout the codebase

[add] removed commented codes

[add] some features and explanations in ReadMe file

[add] removed commented protocol and added custom protocols

[add] updated ReadMe.md to demo the app

[add] replacing the medium and hard gif to make it shorter

[add] gif files needed to demo the game