.travis.yml in sync-defer-0.9.6 vs .travis.yml in sync-defer-0.9.7

@@ -1,6 +1,10 @@
-script: 'git submodule update --init; bundle exec rake test'
+before_install: 'git submodule update --init'
+script: 'ruby -r bundler/setup -S rake test'
+
+env:
+  - 'RBXOPT=-X19'
+
 rvm:
-  - 1.9.2
   - 1.9.3
-  - rbx-19mode
-  - jruby-19mode
+  - rbx-head
+  - jruby-head