.travis.yml in simple-websocket-vcr-0.0.7 vs .travis.yml in simple-websocket-vcr-0.1.0

@@ -1,6 +1,4 @@
 language: ruby
 rvm:
-  - 2.0
-  - 2.1
-  - 2.2
-#  - 2.3 not yet on Travis
+  - 2.3
+  - 2.4