Added license text to python code
Added license text to python code

danpoltawski/gtfs_SQL_importer,laidig/gtfs_SQL_importer,danpoltawski/gtfs_SQL_importer,danpoltawski/gtfs_SQL_importer,laidig/gtfs_SQL_importer,brennan-v-/gtfs_SQL_importer,cbick/gtfs_SQL_importer,fitnr/gtfs-sql-importer,brennan-v-/gtfs_SQL_importer