Update Travis infrastructure

cupakromer · cupakromer · commit 26e5d8653e35 · 2015-12-21T22:17:15.000-05:00
See https://docs.travis-ci.com/user/migrating-from-legacy
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,7 @@
 language: ruby
+bundler_args: --jobs=3 --retry=3
+cache: bundler
+sudo: false
 rvm:
   - 2.1
   - 2.2
