Added support to read outside error count returned from XML formatter.

[pingfr]

I opened a issue #85 to get error count from errors outside of an example. This is the pull request for that issue. Please let me know if there is any further action needed.

[sj26]

How about:

Suggested change

	reports_errors_outside? ? @summary_notification.errors_outside_of_examples_count : 0
	# Introduced in rspec 3.6
	if @summary_notification.respond_to?(:errors_outside_of_examples_count)
	@summary_notification.errors_outside_of_examples_count
	else
	0
	end

[pingfr]

That works for me. I will make that change and push it.

[sj26]

I think you'll need to add an errors_count method within lib/rspec_junit_formatter/rspec2.rb to fix the cross version tests.

They can be run with:

bundle install
bundle exec appraisal install
bundle exec appraisal rspec

You can test just rspec 2.x with:

bundle exec appraisal rspec-2-x rspec

[pingfr]

Travis is happy now. Let me know if there are any other concerns before you accept the PR. Also wondering when it will be part of an official release.

[sj26]

Great, thank you!