update rubies in travis

.travis.yml

@@ -5,21 +5,21 @@ language: ruby
 sudo: false
 
 rvm:
-  - &ruby1 2.3.0
-  - &ruby2 2.2.4
-  - &ruby3 2.1.8
+  - &ruby1 2.3.1
+  - &ruby2 2.2.5
+  - &ruby3 2.1.9
   - &jruby jruby-9.1.2.0
 
 matrix:
   include:
     - rvm: *ruby1
       env: TEST_SUITE=fmt
-    - env: TEST_SUITE=default-site
-      rvm: *ruby1
+    - rvm: *ruby1
+      env: TEST_SUITE=default-site
   exclude:
     - rvm: *jruby
       env: TEST_SUITE=cucumber
-    
+
 env:
   matrix:
     - TEST_SUITE=test