Add a tombstone.

gvanrossum · gvanrossum · commit 870ea07a7c17 · 2007-08-09T14:36:01.000Z
diff --git a/GRIN.txt b/GRIN.txt
@@ -0,0 +1,8 @@
+    "Well! I've often seen a cat without a grin," thought Alice; "but
+    a grin without a cat! It's the most curious thing I ever saw in
+    all my life!"
+
+The "py3k-struni" branch is no more.  Please switch over to the "py3k"
+branch, which is its direct descendant.
+
+GvR, August 9th, 2007
