.rultor.yml in pdd-0.17.9 vs .rultor.yml in pdd-0.18

@@ -3,9 +3,10 @@
   s3cfg: zerocracy/home#assets/s3cfg
 install: |
   sudo apt-get update
   sudo apt-get install -y --fix-missing libmagic1 libmagic-dev
   sudo gem install pdd
+  sudo gem install xcop
 release:
   script: |-
     env
     bundle install
     rake