Add LICENSE.txt

LICENSE.txt

+Public domain code. Use however you like.

food.pl

 #!/usr/bin/env perl
 
-# Ruokalistaparseri v1.5.1
+# Ruokalistaparseri v1.5.3
 # Copyright (c) 2007-2010 Timo Sirainen
+#               2011-2012 Toni Fadjukoff
 # This is Public Domain
 
 use strict;