.travis.yml in percy-cli-1.2.6 vs .travis.yml in percy-cli-1.2.7

@@ -1,7 +1,6 @@
 language: ruby
 rvm:
-  - 1.9.3
-  - 2.1.1
-  - 2.2.2
+  - 2.1
+  - 2.2
   - ruby-head
 script: bundle exec rspec