Add simple example program which prints all primes between two numbers

bin/primes.pl

@@ -0,0 +1,15 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use lib 'lib';
+use Math::Primality qw/is_prime/;
+$|++;
+
+my ($start, $end) = @ARGV;
+die "USAGE:$0 start end\n" unless ($start >= 0 && $end > $start);
+
+my $i=$start;
+
+while ( $i++ <= $end ){
+    print "$i\n" if is_prime($i);
+}