Updated RSpec configuration to persist example statuses.
Updated RSpec configuration to persist example statuses.

- The `example_status_persistence_file_path` configuration
  allows the use of `rspec --only-failures` or, better yet,
  `--next-failure` based on information saved in the file
  for re-running only failed specs.
- Release Notes: http://rspec.info/blog/2015/06/rspec-3-3-has-been-released

bkuhlmann/rails_slim_template,bkuhlmann/rails_slim_template,bkuhlmann/rails_slim_template