Update README to say archived

Author: mohawk2

README

@@ -1,45 +1 @@
-OpenGL-Array version 0.71_01
-============================
-
-This is a stand-alone distribution of OpenGL::Array
-(which includes OpenGL::Matrix).  All of these were
-implicitly loaded whenever the Perl OpenGL module was use-d.
-
-This module should be compatible with OpenGL::Array
-and OpenGL::Matrix from Perl OpenGL version 0.70 and can
-be used as a replacement for that functionality.
-
-The separate release is to enable backwards and forwards
-compatibility between the legacy OpenGL module functionality
-and the coming OpenGL::Modern module under development.
-
-
-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:
-
-  Devel::CheckOS      => 0
-  ExtUtils::MakeMaker => 6.52
-  Test::More          =>  0
-
-Do not install this module with OpenGL.  It is only for
-use separate from that module 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. All rights reserved.
-  Copyright (C) 2017 Chris Marshall.  <[email protected]>
-
-  This program is free software; you can redistribute it and/or
-  modify it under the same terms as Perl itself.
+This is now archived. See the "pogl" repository for where the code now lives.