SDL_gesture: README.md: Note that you don't need all the support files, just the header.

From ce6e87b34f80340ec13f39bd4782e43e8fb50144 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Sat, 17 Dec 2022 23:50:48 -0500
Subject: [PATCH] README.md: Note that you don't need all the support files,
 just the header.

---
 README.md | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 5033ef9..e08ecc8 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,14 @@ can drop into your SDL3-based project.
 We do not make formal releases of this code; just grab the latest and drop
 it into your project!
 
-To use:
+# There's a lot of files in here
+
+You only need SDL_gesture.h ...all the other stuff, including the CMake
+project files, are for the test app, which helps us make sure the header
+works, but you do not need any of these files to use the library.
+
+
+# Usage:
 
 - Copy SDL_gesture.h into your project.
 - Wherever you need access to this functionality, `#include` the header,