[gnome-latex] README file: update about dconf dependency

[Sébastien Wilmet <swilmet src gnome org>]

commit c92d2a252da1376bcb0fe4723560daa933cd07b1
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu May 10 15:16:40 2018 +0200

    README file: update about dconf dependency

 README | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/README b/README
index 9a0eb40..74f7784 100644
--- a/README
+++ b/README
@@ -24,8 +24,9 @@ Dependencies
 * Tepl >= 4.0 - https://wiki.gnome.org/Projects/Tepl
 * gspell >= 1.0
 * gee-0.8 >= 0.10
-* dconf
 * gsettings-desktop-schemas
+* dconf (optional, recommended on Linux, can be disabled with
+  --disable-dconf-migration)
 * Latexmk >= 4.31 (optional, but strongly recommended)
 
 And for building the sources: