board printing

src/main.rs

@@ -1,7 +1,12 @@
+use repr::{Board, Piece};
+
 mod agent;
 mod game;
 mod repr;
 
 fn main() {
-    println!("Hello, world!");
+    let mut board = Board::new();
+    board.place(0, 1, Piece::Black).unwrap();
+    board.place(0, 3, Piece::White).unwrap();
+    println!("{}", board);
 }