.travis.yml in shoryuken-2.0.3 vs .travis.yml in shoryuken-2.0.4

- old
+ new

@@ -13,5 +13,7 @@
   email:
     on_success: change
     on_failure: always
 
 script: SPEC_ALL=true bundle exec rspec spec
+before_install:
+ - gem update bundler