Wrap main code section in MAIN sub
Wrap main code section in MAIN sub

Example now takes --verbose as an option; when True, this gives verbose
progress output.

stmuk/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples,stmuk/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples