Not too sure if this was noticed or intentional, but I noticed that jasmine is now open on npm as a potential package name. (http://search.npmjs.org/). I noticed an (old) pull request with a package.json in it, but it seems all that is really needed (now) is a "main": "lib/jasmine-core/jasmine.js" line to get npm install jasmine working.
npm install jasmine
As an aside, I was initially thinking of creating another CLI package (something like node-jshint) and calling it a different name when I came across the fact that jasmine was available, but I thought I would post here first instead of possibly taking it.
Thanks for the notice.
We're now using grunt for some build and test tasks. There will be an official jasmine npm soon, but likely after 2.0.