+ Split the 'execute' function in two part
+ Added some comments
+ Changed some parameters to be more explicit
+ Add the use of the module argparse
+ Add --exclude option to exclude dirs from the backup
 - Added some comments
 - Corrected the bug caused by the - with options (replace it with _)
 - Used a hash instead of a Namespace for the ARGS variable
 - Corrected the bug which doesn't allow to backup / correctly