anybody else?
seems to be correct installed tho
tim@vm:~/rails/$ cat spec/rails_helper.rb | grep validate_url
require 'validate_url/rspec_matcher'
tim@vm:~/rails/$ cat Gemfile | grep validate_url
gem "validate_url"
tim@vm:~/rails/$ bundle show | grep validate_url
* validate_url (1.0.8)