I'm sure installation instructions will be added eventually. Not sure about the "doc" folder though... That one really doesn't require any installation, you could keep it anywhere on your computer since you have to open the files manually anyway. (They won't integrate with the Documentation Center.) So the instructions would come down to only the first point.

Haha, well, with 200 packages you won't notice eight new ones! Maybe it's just me then.

Yes, I suspected that what you say is the case. I should have examined each init.m to see that it is indeed correctly set up so that a simple <<PkgName` command loads it.

If the packages' author sees this, I would urge him to add a simple .txt file at the top-level in the archive saying simply to:

(1) copy each of the subfolders in the "packages" folder to the MathematicaUserBase's Applications folder; and

(2) cry the doc folder into the copied SciDraw folder.

"Clutter" of the Applications folder is hardly a problem, at least for me: I already have some 200 packages — some very small and some quite large — there!