.travis.yml in adminpanel-2.2.5 vs .travis.yml in adminpanel-2.3.0

- old
+ new

@@ -6,10 +6,6 @@
 sudo: false
 
 cache: bundler
 
 env:
-  - RAILS=4.0.8
-  - RAILS=4.1.1
-  - RAILS=4.1.2
-  - RAILS=4.1.3
-  - RAILS=4.1.4
+  - RAILS=4.2.0.rc3