Add Keywords entry for the provided .desktop file

Author Nick Andrik <nick.andrik@gmail.com>
Index: b/acetoneiso/menu/AcetoneISO.desktop
===================================================================
--- a/acetoneiso/menu/AcetoneISO.desktop
+++ b/acetoneiso/menu/AcetoneISO.desktop
@@ -1,5 +1,6 @@
 [Desktop Entry]
 Categories=Qt;KDE;AudioVideo;DiscBurning;
+Keywords=mount,iso,mdf,ngr,bin,cue,burn,convert,acetoneiso,cd,dvd,image
 Exec=acetoneiso %f
 Icon=Acetino2
 MimeType=application/x-iso;
