Fix for issue #36 (https://github.com/activewarehouse/activewarehouse-etl/issues/36), #last_local_file_trigger now returns the path of the file based on the timestamps in the filenames.  It will raise an exception if no trigger files exist.
Fix for issue #36 (https://github.com/activewarehouse/activewarehouse-etl/issues/36), #last_local_file_trigger now returns the path of the file based on the timestamps in the filenames.  It will raise an exception if no trigger files exist.

thinkthroughmath/activewarehouse-etl,activewarehouse/activewarehouse-etl