Added video section along with a new video

I already had two trailers for two of my games. Now I have a third video, so it's time for a real video section for this site. From now on you can watch all my videos also on this site. All my videos will be hosted on YouTube and I'm not going to provide any download links to the original video files because they're huge and I don't have enough webspace.

Also, don't forget to check that brand new video. It's Half-Life 2 related (after such a long while).