Updated the display grid function (looks prettier now)
removed useless comment
game function structure written. Now we can enter a number
added a game.c file (containing the method game ()
Added a clear function to clear the screen independently from the OS used
game () squeleton is finished. need to update the save and load() functions
need to create delete_grid() to free the memory
added a function to clear memory delete_grid()
Fixed the save and load functions (need to be tested)