Added note to main page indicating minimum JDK version requirement.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/proxy/branches/proxy-1.0-work@629260 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/site/xdoc/index.xml b/src/site/xdoc/index.xml
index 13cf45d..2f95749 100644
--- a/src/site/xdoc/index.xml
+++ b/src/site/xdoc/index.xml
@@ -138,6 +138,9 @@
             <p>
                 For previous releases, see the <a href="http://archive.apache.org/dist/commons/proxy/">Apache Archive</a>
             </p>
+            <p>
+                <i><b>Note:</b> The 1.x releases are compatible with JDK1.4+.</i>
+            </p>
         </section>
         <section name="Support">
             <p>