Minor Docblock update: corrected the return value from PHPExcel_Shared_Date::ExcelToPHPObject updated to reflect the PHP DateTime object that is to be returned.
Merge pull request #387 from trxndynamics/develop

Minor Docblock update: corrected the return value from PHPExcel_Shared_Date::ExcelToPHPObject updated to reflect the PHP DateTime object that is to be returned.