Remove deprecation warnings from spec files

Deprecations inside of RAD still exist
Access the current example through new RSpec.current_example
Remove deprecation warnings
Move the example method out of private

RSpec doesn't like that it's private in a real app.
Formatters #stop receives a NullNotification
Update Callbacks to latest RSpec
Last cucumber failure

Still failing because of example_request not being able to set the file
and location metadata
Add back file locations to example_request
Merge branch 'rspec-3' of github.com:mikeastock/rspec_api_documentation

Conflicts:
	Gemfile.lock
	rspec_api_documentation.gemspec