This is the template I use:

use strict;
use warnings;
use Getopt::Long qw(:config no_ignore_case);
use Pod::Usage;

my %opt;
my ( $opt_help, $opt_man );

GetOptions(
#    'add+'       => \$opt{add},
#    'flag!'      => \$opt{flag},
#    'integer=i'  => \$opt{integer},
#    'optional:s' => \$opt{optional},
#    'string=s'   => \$opt{string},

    'help!'     => \$opt_help,
    'man!'      => \$opt_man,
) or pod2usage( -verbose => 0 );

pod2usage( -verbose => 1 ) if defined $opt_help;
pod2usage( -verbose => 2 ) if defined $opt_man;

# Make sure at least one argument provided
if ( !@ARGV ) {
    pod2usage( -verbose => 0, -message => "$0: one argument required\n
+" );
}

__END__

=head1 NAME

[TITLE] - [TEXT]

=head1 SYNOPSIS

 [PROGNAME ARGS]

=head1 DESCRIPTION

[TEXT DESCRIPTION]

=head1 OPTIONS

 [OPT         DESCRIPTION]

 --help       Print Options and Arguments.
 --man        Print complete man page.

=head1 LICENSE

This software is released under the same terms as Perl itself.
If you don't know what that means visit L<http://perl.com/>.

=cut
[download]