[Travis testing] Gemfile.lock master for ec2: ubuntu14.04 and rubygems 2.2.2

- included by pull request https://github.com/saasbook/rag/pull/41

These were givens:
- `gem -v` # => 2.2.2 
- `ruby -v` # => 1.9.3-p545

=======================

This is the update:
- `bundle update --source ZenTest`
- `bundle update --source debugger`
- `git add Gemfile.lock`