/// <summary>
/// Edit existing todo item based on passed in todo item.
/// </summary>
/// <param name="toDo">passed in todo item</param>
public void Edit(ToDo toDo)
{
fileDict[toDo.Id] = toDo;
}
/// <summary>
/// Add passed in todo item to list.
/// </summary>
/// <param name="toDo">passed in todo item</param>
public void Add(ToDo toDo)
{
fileDict.Add(toDo.Id, toDo);
}
