Tangelo attempts to create the logfile directory if it does not exist, and prints an error message if something goes wrong
Tangelo attempts to create the logfile directory if it does not exist, and prints an error message if something goes wrong

Closes #246

ecohealthalliance/tangelo,Kitware/tangelo,Kitware/tangelo,ecohealthalliance/tangelo,mathstuf/tangelo,mathstuf/tangelo,Kitware/tangelo,mathstuf/tangelo,ecohealthalliance/tangelo