Add a warning to PEP 302 that it should not longer be used as a

reference.

pep-0302.txt

@@ -11,6 +11,11 @@ Created: 19-Dec-2002
 Python-Version: 2.3
 Post-History: 19-Dec-2002
 
+.. warning::
+   The language reference for import [10]_ and importlib documentation
+   [11]_ now supercede this PEP. This document is no longer updated
+   and provided for historical purposes only.
+
 
 Abstract
 ========
@@ -553,6 +558,12 @@ References and Footnotes
 .. [9] New import hooks + Import from Zip files
    http://bugs.python.org/issue652586
 
+.. [10] Language reference for imports
+   http://docs.python.org/3/reference/import.html
+
+.. [11] importlib documentation
+   http://docs.python.org/3/library/importlib.html#module-importlib
+
 
 Copyright
 =========