updated appdata.xml

Author: peteruithoven

data/com.github.peteruithoven.resizer.appdata.xml

@@ -1,11 +1,31 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Copyright 2018 Peter Uithoven <[email protected]> -->
 <component type="desktop">
-  <id>com.github.yourusername.yourrepositoryname.desktop</id>
+  <id>com.github.peteruithoven.resizer.desktop</id>
   <metadata_license>CC0</metadata_license>
+  <project_license>GPL-2.0+</project_license>
   <name>Resizer</name>
-  <summary>Image resizer</summary>
+  <summary>Quickly resize images from the context menu.</summary>
   <description>
-    <p>Adds a resize option your context menu</p>
+    <p>Simply right click on your image file(s), and select "Resize image" from the context menu.</p>
+    <p>Change the sizes using the up and down keys on your keyboard and press enter to resize.</p>
+    <p>Settings are stored for next time.</p>
   </description>
+  <screenshots>
+    <screenshot type="default">
+      <image>https://raw.githubusercontent.com/peteruithoven/resizer/master/screenshot.png</image>
+    </screenshot>
+    <screenshot>
+      <image>https://raw.githubusercontent.com/peteruithoven/resizer/master/screenshot2.png</image>
+    </screenshot>
+  </screenshots>
+  <developer_name>Peter Uithoven</developer_name>
+  <url type="homepage">https://github.com/peteruithoven/resizer</url>
+  <url type="bugtracker">https://github.com/peteruithoven/resizer/issues</url>
+  <url type="help">https://github.com/peteruithoven/resizer/issues</url>
+  <update_contact>[email protected]</update_contact>
+  <custom>
+    <value key="x-appcenter-color-primary">#60caee</value>
+    <value key="x-appcenter-color-primary-text">#ffffff</value>
+  </custom>
 </component>