.travis.yml in ably-rest-0.7.0 vs .travis.yml in ably-rest-0.7.1

@@ -1,8 +1,5 @@
 language: ruby
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.1.1
-  - jruby-18mode # JRuby in 1.8 mode
-  - jruby-19mode # JRuby in 1.9 mode
-  - rbx-2.4.1
+  - 2.2.0