Skip subscribe on test

[kuboon]

solid_errors/lib/solid_errors/engine.rb

Lines 15 to 17 in b75251b

	initializer "solid_errors.active_record.error_subscriber" do
	Rails.error.subscribe(SolidErrors::Subscriber.new)
	end

This line works on every RAILS_ENV.

I wrote ugly workaround on my config/environments/test.rb

config.after_initialize do
    Rails.error.unsubscribe(SolidErrors::Subscriber)
end

Which solution would be better?

1. Hard cord: Rails.error.subscribe(SolidErrors::Subscriber.new) unless Rails.env.test?
2. Supply config.rails_error_subscriber (default to true?)
3. Supply config.rails_error_subscribe_envs (default to ["production"]?)
4. Add unsubscribe document on README