added screenshots dir and adding images into readme file

README.md

@@ -29,7 +29,7 @@ The aim of the game is to get one of the tiles upto a score of 2048 by combining
 ### Initilise Function
 
 First we set a seed for our random number generator using the system time as the seed.
-Then we set the ``` gameOver ``` and the ``` moved ``` variables to false to get it ready.
+Then we set the `gameOver` and the` moved `variables to false to get it ready.
 Then we use for loops in order to create the board.
 Then run the generateRandomTile function to create the first tiles in the game.