[gtk/update-readme] Update the README

[Matthias Clasen <matthiasc src gnome org>]

commit 7a0436098e731d189e8d303d617e15b4ec435062
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Sep 15 15:08:13 2021 -0400

    Update the README
    
    Remove the mention of GNU, state that GTK is hosted
    by the GNOME project, and point to GNOME as a place
    for donations.

 README.md | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)
---
diff --git a/README.md b/README.md
index 4df37adbb4..76917cbbba 100644
--- a/README.md
+++ b/README.md
@@ -10,10 +10,12 @@ GTK is a multi-platform toolkit for creating graphical user interfaces.
 Offering a complete set of widgets, GTK is suitable for projects ranging
 from small one-off projects to complete application suites.
 
-GTK is free software and part of the GNU Project. However, the
-licensing terms for GTK, the GNU LGPL, allow it to be used by all
-developers, including those developing proprietary software, without any
-license fees or royalties.
+GTK is a free and open-source software project. However, the licensing terms
+for GTK, the GNU LGPL, allow it to be used by all developers, including those
+developing proprietary software, without any license fees or royalties.
+
+GTK is hosted by the GNOME project (thanks!) and used by a wide variety
+of applications and projects.
 
 The official download location
 
@@ -151,6 +153,9 @@ Contributing to GTK
 Please, follow the [contribution guide](./CONTRIBUTING.md) to know how to
 start contributing to GTK.
 
+If you want to support GTK financially, please consider donation to
+the GNOME project, which runs the infrastructure hosting GTK.
+
 Release notes
 -------------