Basic HTTParty post command.

googl.rb

require 'json'
require 'httparty'

class Googl
  include HTTParty
  base_uri "https://www.googleapis.com"
  headers "Content-Type" => "application/json"

  def self.shorten(url)
    post("/urlshortener/v1/url", :body => {:longUrl => url}.to_json)["id"]
  end
end