Added "will go away" experiment note to home page

index.html

@@ -29,6 +29,8 @@ Please do <B>NOT</B> bookmark nor link to this
 <A HREF="https://ioccc-src.github.io/temp-test-ioccc/">https://ioccc-src.github.io/temp-test-ioccc/</A>
 </BLOCKQUOTE>
 <P>
+When this experiment is finished, this site <B>will go away</B>!
+<P>
 This test web tree is part of the
 <A HREF="https://github.com/ioccc-src/temp-test-ioccc">temp-test-ioccc</A> GitHub repo:
 <BLOCKQUOTE>