Add "About" to QuickList

[Cassidy James Blaede]

In elementary OS, we show the desktop actions in the QuickList in the dock and Slingshot. Because of this, it's the recommended spot to put an easy "About" dialog. You'd need to add an --about option to your app that just spawns the about dialog, then add that as a desktop action in your .desktop file. For example:

Actions=AboutDialog;

[Desktop Action AboutDialog]
Exec=feedreader --about
Name=About FeedReader

[JeanLuc (eviltwin1)]

But how do you attach the dialog to the main window?
This way its just floating around on the screen.

[JeanLuc (eviltwin1)]

fixed with rev. 140
about dialog does not have a parent just like every other elementary app (not sure if I like it)