Simple bit.ly API class in Ruby

bitly.rb

require 'httparty'

class Api::Bitly
  include HTTParty
  base_uri 'api.bit.ly'
  basic_auth 'username', 'password'
  format :json
  
  def self.shorten(url)
    response = get('/shorten', :query => required_params.merge(:longUrl => url))
    response['results'][url]['shortUrl']
  end
  
  def self.required_params
    {:version => "2.0.1"}
  end
end