Update bundler during Travis build.

jimmycuadra · jimmycuadra · commit 02dd8f44b341 · 2015-11-16T22:00:28.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,7 @@ rvm:
 script: bundle exec rake
 before_install:
   - gem update --system
+  - gem update bundler
 services:
   - redis-server
 branches:
