.travis.yml in authority-3.1.0 vs .travis.yml in authority-3.2.0

@@ -1,19 +1,6 @@
 language: ruby
 rvm:
-  - 1.9.3
-  - 2.0
-  - 2.1
-  - 2.2
-  - jruby-19mode # JRuby in 1.9 mode
-  - rbx-2
+  - 2.3.1
 
 gemfile:
-  - gemfiles/3.2.gemfile
-  - gemfiles/4.0.gemfile
-  - gemfiles/4.1.gemfile
-  - gemfiles/4.2.gemfile
-
-matrix:
-  exclude:
-    - rvm: rbx
-      gemfile: gemfiles/4.0.gemfile
+  - gemfiles/5.0.gemfile