Fine come back sudo

.travis.yml

 language: ruby
-sudo: false
 rvm:
   - 2.0.0
   - 2.1.1
@@ -10,7 +9,7 @@ notifications:
   email: false
 git:
   depth: 10
-before_install: pip install docutils
+before_install: sudo pip install docutils
 cache:
   - bundler
   - pip