.travis.yml in squib-0.4.0 vs .travis.yml in squib-0.5.0

@@ -1,6 +1,7 @@
 language: ruby
-cache: bundler
+sudo: false # taking advantage of container-based infrastructure
+cache: bundler # maybe someday they'll add support for us freeloaders...
 rvm:
-  - 2.0.0
-  - 2.1.5
-  - 2.2.0
+  - 2.0
+  - 2.1
+  - 2.2