.travis.yml in gitable-0.3.1 vs .travis.yml in gitable-0.4.0

@@ -1,6 +1,12 @@
 language: ruby
 rvm:
-  - 1.9.3
   - 2.0.0
-  - jruby
-  - rbx-19mode
+  - 2.1.0
+  - 2.2.0
+  - 2.3.0
+  - ruby-head
+  - jruby-head
+matrix:
+  allow_failures:
+    - rvm: ruby-head
+    - rvm: jruby-head