Clarify what goes where with meta and universal autoboxed methods.

For #42

lib/perl5i/2/Meta/Class.pm

@@ -1,5 +1,7 @@
 package perl5i::2::Meta::Class;
 
+# Methods here are for $thing->mc->method.
+
 use strict;
 use warnings;
 

lib/perl5i/2/Meta/Instance.pm

@@ -1,5 +1,7 @@
 package perl5i::2::Meta::Instance;
 
+# Methods here are for $thing->mo->method.
+
 use 5.010_000;
 use strict;
 use warnings;

lib/perl5i/2/UNIVERSAL.pm

@@ -1,6 +1,8 @@
 package perl5i::2::UNIVERSAL;
 
-# Methods which apply to all autoboxed objects
+# Methods which apply to all autoboxed objects.
+#
+# They do NOT apply to blessed objects.  That should go into perl5i::2::Meta::Instance.
 
 use strict;
 use warnings;