SUM of dynamic Columns in PIVOT table in SQL Server

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I have a Dynamic PIVOT query in which Columns are dynamically generated.

My table: ATTENDANCE_MASTER Contains: ID, Stud_id, ATT_DATE, PRESENT

which stores data like:

ID  Stud_id ATT_DATE   PRESENT
1     1     2015-08-1    1
2     2     2015-08-1    0
3     3     2015-08-1    1
4     1     2015-08-2    0
5     2     2015-08-2    1
6     3     2015-08-2    1

I have created PIVOT Query

DECLARE @columns NVARCHAR(MAX), @sql NVARCHAR(MAX);

SET @columns = N'';
SELECT @columns += N', p.' + QUOTENAME(ATT_DATE)
  FROM (SELECT p.ATT_DATE FROM dbo.ATTENDANCE_MASTER AS p
  GROUP BY p.ATT_DATE) AS x;

SET @sql = N'SELECT Stud_id, ' + STUFF(@columns, 1, 2, '') + '
FROM
(
  SELECT p.ATT_DATE, p.Stud_id, p.PRESENT FROM dbo.ATTENDANCE_MASTER AS p
) AS j
PIVOT
(
  SUM(PRESENT) FOR ATT_DATE IN ('+ STUFF(REPLACE(@columns, ', p.[', ',['), 1, 1, '') + ')
) AS p;';
PRINT @sql;
EXEC sp_executesql @sql;

I need sum of columns like

Stud_ID  2015-08-01   2015-08-2 2015-08-3 Total
1            1            0         1      2
2            1            1         1      3
3            1            1         0      2
4            0            0         1      1

Please suggest me solution.

Thanks in Advance.