When I load table view with checked cells and I want to uncheck a specific cell I need to tap twice on cell to uncheck it, I guess I know where's the problem but I don't how I can solve this issue? 

```
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("daySelected", forIndexPath: indexPath)
        cell.selectionStyle = .None

        cell.textLabel?.text = days[indexPath.row]

            if indexPath.row == 0 && day[0] == true{
                cell.accessoryType = .Checkmark
            }

        return cell
    }
}

    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

        if let cell = tableView.cellForRowAtIndexPath(indexPath) {
            cell.accessoryType = .Checkmark
        }else{
             cell!.accessoryType = .None
        }
 if indexPath.row == 0{
            day[0] = true

        }

    }

    override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {

        if let cell = tableView.cellForRowAtIndexPath(indexPath) {
            cell.accessoryType = .None
        }

        if indexPath.row == 0{
            day[0] = false

        }

    }

```