README.md in staccato-rack-0.4.2 vs README.md in staccato-rack-0.4.3

@@ -36,9 +36,11 @@
   ContikiApi::Application.configure do
     config.middleware.use Staccato::Rack::Middleware, Rails.application.secrets.ga_tracking_id, logger: Rails.logger
   end
 ```
 
+Note that all post to Google analytics are does in a separate thread to prevent holding up the rack request
+
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `bin/console` for an interactive prompt that will allow you to experiment.
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release` to create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).