[gnome-dictionary] app: bump required Gtk+ version

[Juan R. Garcia Blanco <juanrgar src gnome org>]

commit adb13a82d396f3e7a440fa36aaa22a6bb1bfe3f5
Author: Juan R. Garcia Blanco <juanrgar gmail com>
Date:   Sun Jan 24 17:18:54 2016 +0100

    app: bump required Gtk+ version

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c17f1da..32f2a9c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -160,7 +160,7 @@ GTK_DOC_CHECK([1.15], [--flavour no-tmpl])
 YELP_HELP_INIT
 
 GLIB_MIN_VERSION=2.39.0
-GTK_MIN_VERSION=3.14
+GTK_MIN_VERSION=3.16
 
 PKG_CHECK_MODULES(GDICT,
                   glib-2.0 >= $GLIB_MIN_VERSION