I am trying to get the access key but I cannot make it work. `request_token.get_access_token is giving me 401 Unauthorized (OAuth::Unauthorized) error. I copy the authorize_url into my browser, allow the application, I receive some kind of PIN from twitter but after hitting enter in my script I always get 401 error. I did some search and I found this helped access_token = request_token.get_access_token(:oauth_verifier => params[:oauth_verifier]) but it is giving me undefined local variable or methodparams' for main:Object (NameError)`

the ruby script is like ( I was following this tutorial )

gem 'oauth'
require 'oauth/consumer'

consumer_key = 'your key'
consumer_secret ='your secret'

consumer=OAuth::Consumer.new "consumer_key", 
                          "consumer_secret", 
                          {:site=>"http://twitter.com"}
     #{:site=>"https://agree2.com"}

request_token = consumer.get_request_token

puts request_token.token
puts request_token.secret
puts request_token.authorize_url
puts "Hit enter when you have completed authorization."
STDIN.gets

access_token = request_token.get_access_token
#access_token = request_token.get_access_token(:oauth_verifier => params[:oauth_verifier])

puts access_token.token
puts access_token.secret
puts
puts access_token.inspect