More work on Travis-CI config.

Author: jemc

.travis.yml

@@ -5,16 +5,18 @@ before_install:
 before_script:
   "rake vendor && rake codegen:ffi"
 script:
-  "rake spec"
+  "rake"
 after_script:
   "rake install"
 
 language: ruby
 rvm:
   - 2.1
+  - 2.2
+  - rbx-2
 os:
   - linux
-  - osx
+  - osx # Note that Travis is not actually accepting OSX builds right now - http://docs.travis-ci.com/user/multi-os/#We-are-not-currently-accepting-multi-OS-requests
 
 notifications:
   email: false