Update README.md

README.md

@@ -14,6 +14,41 @@ There is a caveat, in that, the minimax algorithm is too slow (since it explores
 
 ## Usage
 
+### As a binary
+
+Install with:
+```sh
+cargo install minimax-alpha-beta
+```
+
+Get usage instructions with:
+```sh
+tic-tac-toe --help
+```
+```
+minimax-alpha-beta 0.2.0
+Aalekh Patel <[email protected]>
+Play a game of Tic Tac Toe with a computer opponent that uses the Alpha-Beta Minimax Engine.
+
+USAGE:
+ tic-tac-toe [OPTIONS]
+
+OPTIONS:
+ --depth <DEPTH> The depth of the search [default: 9]
+ -h, --help Print help information
+ --size <SIZE> The size of the board [default: 3]
+ -V, --version Print version information
+```
+
+For example, to play a regular 3x3 tic-tac-toe game just use `tic-tac-toe`.
+
+Otherwise to play a 6x6 tic-tac-toe game with search depth of 5, use
+```sh
+tic-tac-toe --depth 5 --size 6
+```
+
+### As a library
+
 The crate provides concrete implementations for TicTacToe, (note: other games are in works).
 
 Use the `TicTacToe::get_best_move(depth, player)` method to compute the best move in this position for this player.