Use docker on travis

http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/

diff --git a/.travis.yml b/.travis.yml
index 7d2bad2d93f9f097c154b113c597b99007ba4532..7d4177ee95e4b76398c2801187526cb7adedc2f3 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,6 @@
 language: ruby
+sudo: false
+cache: bundler
 rvm:
   - 1.9.3
   - 2.0.0