[gnome-tweaks] README: mention libhandy, gsettings-desktop-schemas 3.33

[Jeremy Bicha <jbicha src gnome org>]

commit b7b1168aaaa5b061d990be0cff8e4b5a01ee3f43
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Mon Aug 5 21:09:46 2019 -0400

    README: mention libhandy, gsettings-desktop-schemas 3.33
    
    GNOME Tweaks 3.33 will still run with gsettings-desktop-schemas 3.32
    but you'll want 3.33 for it to work correctly.

 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index 99e75f5..daa1cc7 100644
--- a/README.md
+++ b/README.md
@@ -21,12 +21,13 @@ RUNTIME DEPENDENCIES
   - GLib (>= 2.58)
   - GTK+ 3 (>= 3.12)
   - gnome-desktop (>= 3.30)
+  - libhandy
   - libsoup
   - libnotify
   - Pango
 
 * GSettings Schemas from:
-  - gsettings-desktop-schemas (>= 3.28)
+  - gsettings-desktop-schemas (>= 3.33.0)
   - gnome-shell (>= 3.24)
   - mutter