move demo documents into separate files

demo/docs/perl.pl

@@ -0,0 +1,32 @@
+#!/usr/bin/perl
+use strict;
+use warnings;
+my $num_primes = 0;
+my @primes;
+
+# Put 2 as the first prime so we won't have an empty array
+$primes[$num_primes] = 2;
+$num_primes++;
+
+MAIN_LOOP:
+for my $number_to_check (3 .. 200)
+{
+    for my $p (0 .. ($num_primes-1))
+    {
+        if ($number_to_check % $primes[$p] == 0)
+        {
+            next MAIN_LOOP;
+        }
+    }
+
+    # If we reached this point it means $number_to_check is not
+    # divisable by any prime number that came before it.
+    $primes[$num_primes] = $number_to_check;
+    $num_primes++;
+}
+
+for my $p (0 .. ($num_primes-1))
+{
+    print $primes[$p], ", ";
+}
+print "\n";