.travis.yml in sucker_punch-1.3.0 vs .travis.yml in sucker_punch-1.3.1

@@ -1,10 +1,17 @@
 language: ruby
 rvm:
   - 1.9.3
   - jruby-19mode
-  - rbx
+  - rbx-2
   - 2.0.0
+  - ruby-head
 matrix:
   allow_failures:
     - rvm: jruby-19mode
-    - rvm: rbx
+    - rvm: rbx-2
+  global:
+    - BUNDLE_JOBS=4
+before_install:
+  # Only use 1 job until Travis fixes the rbx --jobs issue.
+  - if [ "$TRAVIS_RUBY_VERSION" == "rbx-2" ] ; then export BUNDLE_JOBS=1 ; fi
+install: bundle install --retry=3