Create qBittorrent.appdata.xml

fixes #1701

An appdata file for inclusion in the upcoming software centers as per the new freedesktop.org specs.

It should be placed in /usr/share/appdata/ similar to the way .desktop files are placed in /usr/share/applications/, e.g. if you have a "$(datadir)/applications" definition in your makefiles, you need to add a "$(datadir)/appdata" as well.

Please, skim through the file in case I made a mistake and please, include it in the 3.1.x branch as well.
Of course you are free to modify it as you see fit, e.g. change the license, change copyright info, use your own screenshots, etc., just make sure it passes validation.

Thanks!

http://people.freedesktop.org/~hughsient/appdata/
http://www.freedesktop.org/software/appstream/docs/chap-Quickstart.html

src/Icons/qBittorrent.appdata.xml

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2014 sledgehammer999 <sledgehammer999@qbittorrent.org> -->
+<component type="desktop">
+ <id>qBittorrent.desktop</id>
+ <metadata_license>CC0-1.0</metadata_license>
+ <project_license>GPL-2.0 and OpenSSL</project_license>
+ <name>qBittorrent</name>
+ <summary>A Bittorrent Client</summary>
+ <description>
+  <p>
+   Aiming to be a good alternative to all other bittorrent clients out
+   there, qBittorrent is fast, stable and provides unicode support as well
+   as many other features. Additionally, qBittorrent runs and provides those
+   same features on all major platforms (Linux, Mac OS X, Windows, OS/2, FreeBSD).
+  </p>
+  <p>
+   It is programmed in C++ / Qt and uses libtorrent (sometimes called
+   libtorrent-rasterbar) by Arvid Norberg. GeoLite data, created by MaxMind,
+   are included in qBittorrent. Its features include:
+  </p>
+  <ul>
+   <li>Polished µTorrent-like User Interface</li>
+   <li>Well-integrated and extensible Search Engine</li>
+   <li>All Bittorrent extensions (DHT, Peer Exchange, Full encryption, Magnet/BitComet URIs, ...)</li>
+   <li>Remote control through a Web user interface</li>
+   <li>Advanced control over trackers, peers and torrents</li>
+   <li>UPnP / NAT-PMP port forwarding support</li>
+   <li>Available in ~25 languages (Unicode support)</li>
+   <li>Torrent creation tool</li>
+   <li>Advanced RSS support with download filters (inc. regex)</li>
+   <li>Bandwidth scheduler</li>
+   <li>IP Filtering (eMule and PeerGuardian compatible)</li>
+   <li>IPv6 compliant</li>
+   <li>Sequential downloading (aka "Download in order")</li>
+  </ul>
+ </description>
+ <screenshots>
+  <screenshot type="default">
+   <image width="1200" height="675">
+    https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_01.png
+   </image>
+  </screenshot>
+  <screenshot>
+   <image width="1200" height="675">
+    https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_02.png
+   </image>
+  </screenshot>
+  <screenshot>
+   <image width="1200" height="675">
+    https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_03.png
+   </image>
+  </screenshot>
+  <screenshot>
+   <image width="1200" height="675">
+    https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_04.png
+   </image>
+  </screenshot>
+ </screenshots>
+ <url type="homepage">http://www.qbittorrent.org/</url>
+ <updatecontact>sledgehammer999@qbittorrent.org</updatecontact>
+</component>