.travis.yml in tty-screen-0.4.3 vs .travis.yml in tty-screen-0.5.0

@@ -1,6 +1,8 @@
+---
 language: ruby
-bundler_args: --without yard benchmarks
+sudo: false
+cache: bundler
 script: "bundle exec rake ci"
 rvm:
   - 1.9.3
   - 2.0
   - 2.1