.travis.yml in activeadmin-0.4.4 vs .travis.yml in activeadmin-0.5.0.pre

- old
+ new

@@ -1,7 +1,12 @@
 script: bundle exec rake
 rvm:
   - ree
   - 1.9.2
+  - 1.9.3
 before_install:
   - gem update --system
   - gem --version
+env:
+  - RAILS=3.0.12
+  - RAILS=3.1.4
+  - RAILS=3.2.3