[gnome-builder] meson-templates: use master for SDK

[Christian Hergert <chergert src gnome org>]

commit fcda3431067c4893a04051dcd40ad116aeec2e1b
Author: Christian Hergert <chergert redhat com>
Date:   Fri Sep 15 12:18:54 2017 -0700

    meson-templates: use master for SDK
    
    For the Nightly/Development version of Builder, we should use the same SDK
    as Builder itself is using. That reduces the chances the application needs
    to download a bunch of new bits and ensures more people are testing the
    development branch of org.gnome.Platform.

 .../meson_templates/resources/flatpak.json         |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/meson-templates/meson_templates/resources/flatpak.json 
b/plugins/meson-templates/meson_templates/resources/flatpak.json
index a3dbab4..3bd4e93 100644
--- a/plugins/meson-templates/meson_templates/resources/flatpak.json
+++ b/plugins/meson-templates/meson_templates/resources/flatpak.json
@@ -1,7 +1,7 @@
 {
   "app-id": "{{appid}}",
   "runtime": "org.gnome.Platform",
-  "runtime-version": "3.26",
+  "runtime-version": "master",
   "sdk": "org.gnome.Sdk",
   "command": "{{exec_name}}",
   "finish-args": [