Achievements - Games won

gameswon.m

- (void)updateGamesWon {
    gamesWonInARow_++;
	
    if (gamesWonInARow_ && (gamesWonInARow_ % 10 == 0 || gamesWonInARow_ == 5)) {
        NSInteger bonus = score_* ((float)gamesWonInARow_ / 100);
        score_ += bonus;

        NSString *achievement = [NSString stringWithFormat:@"%d games in a row! (+%d)", gamesWonInARow_, bonus];
        [self achievementUnlocked:achievement];
    }
    
    [scoreLabel_ setString:[NSString stringWithFormat:@"Score: %d", score_]];
}