Importing products from Magento into Spree

Magento is evil. If you're working with its PHP codebase, I'm sorry. After looking for an easier, less dangerous solution, I found Spree. Easy to use, looks half decent out of the box, and built on Ruby on Rails, the slow but easy web framework. And there's a Heroku extension. Awesome.

One problem: The Magento installation had 9000 products, with names, descriptions, SKUs, and other fun attributes. Spree has no built-in import or export function. Do I want to enter all this information manually? No.

After some googling, yahooing, and asking jeeves, I found a Google group discussion, took some of the example code, tailored it to the CSV format of a standard Magento export, and ended up with this hack:
If you don't have the FasterCSV gem installed, install it before running this import script:
gem install fastercsv

Use the Rails runner to run this script so it has access to the database:
script/runner import.rb

and you're done.