.travis.yml in epo-ops-0.3.0 vs .travis.yml in epo-ops-0.3.1

@@ -1,6 +1,5 @@
 language: ruby
 rvm:
-  - "2.0"
-  - "2.1"
-  - "2.2"
-  - "2.3.0"
+  - 2.2.7
+  - 2.3.4
+  - 2.4.1