.travis.yml in roadie-3.1.0 vs .travis.yml in roadie-3.1.1

@@ -1,13 +1,15 @@
+sudo: false
 language: ruby
 rvm:
   - 1.9.3
   - 2.0
   - 2.1
   - 2.2
   - jruby
   - rbx
 
+cache: bundler
 bundler_args: --without guard
 script: "rake"
 
 env:
   # Setup Coveralls