Added ability to add metadata into text file when doing toFile().
Added ability to add metadata into text file when doing toFile().

djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,blizzardwarriorwx/SHARPpy,scollis/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,scollis/SHARPpy,scollis/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,scollis/SHARPpy,djgagne/SHARPpy