Save Game

[kchevali]

Description

The game state should be serializable and saved to file. If the player chooses to the quit the game then they should be prompted to save the game. If a game is saved and the player wants to start a game then the player should be prompted if they would like to continue their last save. A game save will overwrite a pre-existing saved game file. Completing the game successfully or not will delete any saved games.