async.rb

# ...

# Call a method asynchronously and get a Thread object

thread = bitly.getShortenedUrl("http://www.mashape.com", "bitly-login", "bitly-api-key") { |response| 
  shortenedUrl = response["shortenedUrl"] # See the API's documentation
  puts "Finally the shortened url is " + shortenedUrl
}

=begin
Do other stuff here. If you program ends here be sure to join the thread otherwise
you'll never see the response, because the main thread will end before the API call is executed
You can do this with: thread.join()
=end