.travis.yml in rest-firebase-0.9.4 vs .travis.yml in rest-firebase-0.9.5

@@ -1,9 +1,10 @@
 before_install: 'git submodule update --init'
 script: 'ruby -r bundler/setup -S rake test'
 
 rvm:
-  - 1.9.3
-  - 2.0.0
+  - 1.9
+  - 2.0
+  - 2.1
   - ruby
   - rbx-2
   - jruby