Support All world-wide mirrors Now

cmd mode support all countries and regions in debian world-wide mirrors now.

You can now use -c specify two-letter country abbreviation for your country

e.g. USfor American Mirrors; CN for Chinese Mirrors

Support both parameter and interactive mode

1. Ram usage was tuned
2. Support passing parameters mode, use -h to check help, use --url to pass a single url of mirror to be tested
3. Support English interactive mode using -i parameter

Please check README for more information