[frogr] Updated README file for up-to-date versions of dependencies

[Mario Sanchez Prada <msanchez src gnome org>]

commit 6d36f49a0a398d9f0f9ce50539912a2621b7fc27
Author: Mario Sanchez Prada <msanchez gnome org>
Date:   Sat Nov 24 23:18:46 2018 +0100

    Updated README file for up-to-date versions of dependencies

 README | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/README b/README
index 725264a..c96212c 100644
--- a/README
+++ b/README
@@ -12,13 +12,13 @@ To be able to build frogr, you'll need some tools and libraries:
 
  - meson, ninja and a C compiler (e.g. gcc, clang)
  - glib (version 2.44 or higher)
- - gtk+ (version 3.4 or higher)
- - json-glib (version 0.12 or higher)
+ - gtk+ (version 3.16 or higher)
+ - json-glib (version 1.2 or higher)
  - libexif (version 0.6.14 or higher)
  - libsoup (version 2.34 or higher)
  - libxml (version 2.6.8 or higher)
  - gstreamer (version 0.10 or 1.0)
- - libgcrypt
+ - gcrypt (version 1.5 or higher)
 
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