More rubies for travis

Author: kzaitsev

.travis.yml

@@ -4,12 +4,14 @@ cache: bundler
 
 matrix:
   include:
-    - rvm: 2.3
+    - rvm: 2.3.0
     - rvm: 2.2
     - rvm: 2.1
+    - rvm: ruby-head
     - rvm: jruby-head
     - rvm: jruby-19mode
     - rvm: rbx-2
   allow_failures:
     - rvm: ruby-head
+    - rvm: jruby-head
 before_install: gem install bundler -v 1.12.1