Add sudo to travis yaml

Joohwan Oh · Joohwan Oh · commit e6bebe9120e0 · 2015-06-12T00:30:20.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,5 @@
 language: python
+sudo: required
 python:
     - "2.7"
 before_install:
