Merge pull request #48 from google/devoncarew-patch-3

Update .travis.yml
diff --git a/.travis.yml b/.travis.yml
index ad23559..35e0ab9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,10 @@
 language: dart
-sudo: false
 
 dart:
   - dev
 
-before_install:
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
+#before_install:
+#  - export DISPLAY=:99.0
+#  - sh -e /etc/init.d/xvfb start
 
 script: ./tool/travis.sh