Migrating to Cucumber

Today I migrated my simulation project to Cucumber. Until now I used rspec's plain text user stories.
The first part, migrating the rails application, was easy thanks to the good documentation in the wiki. The second part, the simulation server, was surprisingly easy as well. All I had to do was creating the same directory structure and following the same steps to move the files from stories to features as for the rails app. Then I removed all rails related lines from env.rb and added my init file, that loads all the classes for the simulation server.

require File.expand_path(File.dirname(__FILE__)+'/../../init')

# Comment out the next line if you don't want Cucumber Unicode support
require 'cucumber/formatter/unicode'

To run the stories I need to execute cucumber features/ in the corresponding direcotries. Running the rake features doesn't work for me as env.rb is not loaded.