aria2c-(s)ftp support

Simple python script that uses aria2c to download remote directories from FTP/SFTP

# Example usage for SFTP:
# ./crawl.py --protocol sftp --host sftp.example.com --user myuser --password mypass

# Example usage for FTP:
# ./crawl.py --protocol ftp --host ftp.example.com --user myuser --password mypass

Requirements

pip install -r requirements.txt