update README to say archived.

Author: mohawk2

README

@@ -1,38 +1 @@
-OpenGL-GLU version 0.03
-==========================
-
-OpenGL::GLU provides perl bindings to the OpenGL Utility Library
-(GLU).  It is derived from the Perl OpenGL code base to extract
-a stand-alone package.  If you just use GLU features from OpenGL,
-then you should be able to accomplish the same with OpenGL::GLU.
-
-INSTALLATION
-
-To install this module type the following:
-
-   perl Makefile.PL
-   make
-   make test
-   make install
-
-DEPENDENCIES
-
-This module requires these other modules and libraries:
-
-  Do not install with OpenGL!  This is a stand-alone
-  module for use with OpenGL::Modern.
-
-
-COPYRIGHT AND LICENCE
-
- Copyright (c) 1998,1999 Kenneth Albanowski. All rights reserved.
- Copyright (c) 2007 Bob Free. All rights reserved.
- Copyright (c) 2009-2013 Chris Marshall.
- Copyright (C) 2017 by Chris Marshall. All rights reserved.
-
-
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
-
-This library is based on the code from the Perl OpenGL module.
-
+This is now archived. See the "pogl" repository for where the code now lives.