Start running railties builds first, since they take the longest finish

.travis.yml

@@ -3,13 +3,6 @@ script: 'ci/travis.rb'
 before_install:
   - travis_retry gem install bundler
   - "rvm current | grep 'jruby' && export AR_JDBC=true || echo"
-rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1
-  - ruby-head
-  - rbx-2
-  - jruby
 env:
   global:
     - JRUBY_OPTS='-J-Xmx1024M'
@@ -22,6 +15,13 @@ env:
     - "GEM=ar:sqlite3"
     - "GEM=ar:postgresql"
     - "GEM=aj:integration"
+rvm:
+  - 1.9.3
+  - 2.0.0
+  - 2.1
+  - ruby-head
+  - rbx-2
+  - jruby
 matrix:
   allow_failures:
     - rvm: 1.9.3