Add bundler cache and move to Travis docker

LeoCavaille · LeoCavaille · commit b25ad144fbf6 · 2015-06-01T14:07:39.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,7 @@
 language: ruby
 before_install: rm -f Gemfile.lock
+sudo: false
+cache: bundler
 rvm:
   - 1.9.3
   - 2.0.0
