Fixed unzip bug by dynamicly gathering the '*.zip' files, renamed management command to all lower case to be inline with Django convention, added '.gitignore', improved the 'unzip' not found error message, and removed 'files already downloaded' skip as the current assumption could lead to unexpected error ex. if unzipping has failed; ideally the check should be based on file time stamp as seen here: https://github.com/danielsokolowski/django-cities/blob/master/cities/management/commands/cities.py#L98.