Quicksilver plug-in

Someone on the mailing list pointed this out. I cleaned up and got it ready for release. If you're OK with all the changes, we can add it to the in-app download list.

I just went through [the same steps][1] we've done for all the plug-ins, and added the URL handler's bundle ID as a related bundle. That will cause this plug-in to appear on the "Recommended" list for anyone that has PushDialer installed locally.

[1]: http://projects.skurfer.com/QuicksilverPlug-inReference.mdown#plug-in-clean-up-and-modernization