Added a single file upload test
Replaced subprocess.call to ogr2ogr with check_call
Corrected module name in tests, and added fake map.html
Added temporary upload directory in tests
Added conversion test for transformers.transform_shapefile()
Added a second file with GGNRA data in conversion test
Added a third test file with San Antonio park trails data
Added a fourth test file with Santa Clara park trails data
Added fifth test file with Portland trails data
Settled on camelCase for test names
Added CSV to each zip file for ease of testing and inspection