Write code to play connect four.

- 6 x 7 grid for the game (2D array is recommended)

- Player vs Computer

- Computer should be a basic AI

- should react to the player when the player is about to win (i.e. blocking a player from winning)

- should attempt to win when they are close to winning

- otherwise randomly chooses where to play

- Prompts the user to play again when the game is over

- The game should account for wins, loses, and ties.

- Keeps track of how many rounds the player has won, lost, and tied.

- Create at least two classes.

- Documentation still applies. (i.e. JavaDocs, inline comments, conventions, etc.)