SDL: Revert "Removed reference to ant project."

From 599001d4c7559b4ed04b3d5590e5536ed87c165e Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Wed, 7 Jul 2021 13:30:48 -0700
Subject: [PATCH] Revert "Removed reference to ant project."

This reverts commit 0cad302346f95da770e5e1dc818f585c4ab4530d.

The ant directory still exists in source control
 docs/ | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/docs/ b/docs/
index 88ef79e11d..9ad8627b33 100644
--- a/docs/
+++ b/docs/
@@ -6,6 +6,9 @@
 The rest of this README covers the Android gradle style build process.
+If you are using the older ant build process, it is no longer officially
+supported, but you can use the "android-project-ant" directory as a template.