Update Worksheet.php getStyleByColumnAndRow()

http://phpexcel.codeplex.com/discussions/263626

$objPHPExcel->getActiveSheet()->getStyleByColumnAndRow(1, 2, 5, 2)->applyFromArray($styleArray);

It is very convenient in cycles
Merge pull request #269 from bolovincev/patch-1

Update Worksheet.php getStyleByColumnAndRow()