Decorator for main method 1.0

Decorator for main method 1.0 is yet another extremely useful script for programmers. It is actually a generic main method for most Python programs which now can be applied with a decorator to make cleaner codes.
This allows option and argument parsing to be hidden from the main code in your program. The user simply passes an optional getopt string and the number of required arguments. Then the actual main function get passed a dictionary of options and a list of arguments.
One possible improvement would be to add an optional error handling routine passed to the decorator. As it is all exceptions are caught in the decorator function and printed to the screen.