[gnome-nibbles] Update appdata

[Sahil Sareen <ssareen src gnome org>]

commit 4554e83effe2e52f1c7f8750e4df586953575ab7
Author: Sahil Sareen <sahil sareen hotmail com>
Date:   Sat Aug 13 01:22:56 2016 +0100

    Update appdata

 data/org.gnome.Nibbles.appdata.xml.in |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/data/org.gnome.Nibbles.appdata.xml.in b/data/org.gnome.Nibbles.appdata.xml.in
index 77c8627..345a596 100644
--- a/data/org.gnome.Nibbles.appdata.xml.in
+++ b/data/org.gnome.Nibbles.appdata.xml.in
@@ -3,7 +3,7 @@
 <component type="desktop">
   <id>org.gnome.Nibbles.desktop</id>
   <metadata_license>CC0-1.0</metadata_license>
-  <project_license>GPL-3.0+ and CC-BY-SA-3.0</project_license>
+  <project_license>GPL-3.0+</project_license>
   <_name>GNOME Nibbles</_name>
   <_summary>Guide a worm around a maze</_summary>
   <description>
@@ -25,7 +25,7 @@
     </_p>
   </description>
   <screenshots>
-    <screenshot type="default" width="972" height="608">
+    <screenshot height="608" width="972" type="default">
       <image>https://people.gnome.org/~mcatanzaro/gnome-nibbles.png</image>
     </screenshot>
   </screenshots>
@@ -33,6 +33,7 @@
   <url type="bugtracker">https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-nibbles</url>
   <url type="donation">http://www.gnome.org/friends/</url>
   <url type="help">https://help.gnome.org/users/gnome-nibbles/stable/</url>
+  <url type="translate">https://wiki.gnome.org/TranslationProject</url>
   <update_contact>mcatanzaro_at_gnome.org</update_contact>
   <project_group>GNOME</project_group>
   <kudos>
@@ -42,4 +43,5 @@
     <kudo>UserDocs</kudo>
   </kudos>
   <translation type="gettext">gnome-nibbles</translation>
+  <_developer_name>The GNOME Project</_developer_name>
 </component>