Make a smart contract for tic-tac-toe in solidity.

[kshavgupta]

Requirements:

1. Use 2-D array to represent the board.
2. Use move() function and gameOver() function in contract to implement the tic-tac-toe.

Please add the comments to explain the code.
Before contributing, read the contributing rules and guidelines given in README.md very well.
Please, push your file only here .

[SanyamAgrawal07]

claim

[kshavgupta]

Assigned to you @SanyamAgrawal07