Add weasel-words about versioning, so I don't have to check in a new
README for each new alpha release.
diff --git a/README b/README
index 69b89dd..519c543 100644
--- a/README
+++ b/README
@@ -1,5 +1,9 @@
-This is Python version 1.6 -- released March 31, 2000
-=====================================================
+This is Python version 1.6
+==========================
+
+There are various alpha and beta versions -- these are distinguishable
+through Include/patchlevel.h or by the name of the top-level directory
+and the tar file.
What's new in this release?