[balsa] fix wrong version numbers in README

[Albrecht Dreß <albrecht src gnome org>]

commit 0af28146bcd07e26f8d22e7aa3eb2d79b8208d3e
Author: Albrecht Dreß <albrecht dress arcor de>
Date:   Fri May 1 14:09:16 2020 +0200

    fix wrong version numbers in README

 README | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/README b/README
index 470f62b0b..35c996744 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-Balsa E-Mail Client 2.5.x
+Balsa E-Mail Client 2.6.x
 =========================
 
 See ChangeLog for the list of the recent changes and NEWS for highlights.
@@ -41,7 +41,7 @@ complete descriptions are here.
 Basically, Balsa requires
 - glib-2.0 >= 2.48.0
 - gtk+-3.0 >= 3.18.0
-- gmime-2.6
+- gmime-3.0 >= 3.2.6
 - gio-2.0
 - gthread-2.0
 - gnutls >= 3.0