Fix json van bord v2

board/board.go

@@ -58,7 +58,7 @@ func (b *Board) String() string {
 
 func (b *Board) WriteJSON(w io.Writer, startCol, startRow, cols, rows int) {
 	sc, sr, cols, rows := sanitizeViewPort(b, startCol, startRow, cols, rows)
-	fmt.Fprintf(w, "{x=\"%v\",y=\"%v\",rows=\"%v\",columns=\"%v\",tiles=[", sc, sr, cols, rows)
+	fmt.Fprintf(w, "{\"x\"=%v,\"y\"=%v,\"rows\"=%v,\"cols\"=%v,\"tiles\"=[", sc, sr, cols, rows)
 
 	for y := startRow; y < sr+rows; y++ {
 		for x := startCol; x < sc+cols; x++ {