.travis.yml in mustermann-0.3.0 vs .travis.yml in mustermann-0.3.1

@@ -1,10 +1,4 @@
 rvm:
 - 2.0.0
-- 2.1.0-preview1
+- 2.1.2
 - ruby-head
-- jruby-head
-- rbx-2.0.0
-matrix:
-  allow_failures:
-  - rvm: jruby-head
-  - rvm: rbx-2.0.0