Add Visual D to the Windows installer

I used `http://downloads.dlang.org/other/VisualD-v${VersionVisualD}.exe` for the download URL.  Could either @WalterBright or @braddr upload VisualD-v0.3.36.exe ([download link](http://www.dsource.org/projects/visuald/browser/downloads/VisualD-v0.3.36.exe?format=raw&FixForIE=.exe>)) to `/others` (I can update this pull request if another path is preferable). Ideally could @rainers be given access to upload Visual D releases himself?