.travis.yml in page-object-0.6.6 vs .travis.yml in page-object-0.6.7

@@ -3,6 +3,8 @@
   - 1.8.7
   - 1.9.2
   - 1.9.3
   - rbx-19mode
   - ree
-  - ruby-head
+before_script:
+  - "export DISPLAY=:99.0"
+  - "sh -e /etc/init.d/xvfb start"