josevalim/active_model_serializers — pull request #131 by dgeb (2012-09-21 12:20:37+00:00)
Title: Ensure bundler is updated for travis testing of edge rails

Bundler 1.2 is required for edge rails, which caused a problem the first time Travis tested against the alternative Gemfile.edge-rails.

This ensures that the latest version of bundler has been installed before tests proceed.