[frogr] flatpak: Rename icons name to flatpak ID

[Mario Sanchez Prada <msanchez src gnome org>]

commit f670498ced250079b6fb4df18f6933ae54c85888
Author: Mario Sanchez Prada <msanchez gnome org>
Date:   Sun Oct 9 01:26:50 2016 +0100

    flatpak: Rename icons name to flatpak ID
    
    Otherwise the icon files won't get exported.

 flatpak/org.gnome.Frogr.json |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/flatpak/org.gnome.Frogr.json b/flatpak/org.gnome.Frogr.json
index 7b1b30b..d8bd4a1 100644
--- a/flatpak/org.gnome.Frogr.json
+++ b/flatpak/org.gnome.Frogr.json
@@ -6,6 +6,7 @@
     "command": "frogr",
     "rename-appdata-file": "frogr.appdata.xml",
     "rename-desktop-file": "frogr.desktop",
+    "rename-icon": "frogr",
     "tags": ["nightly"],
     "finish-args": [
         /* X11 + XShm access */