Twitter XAuth for Ruby scripts

This post explains very well what is going on:
http://www.reynoldsftw.com/2010/03/using-xauth-an-alternate-oauth-from-twitter/

Now, if you have a script to post to Twitter everytime an item is added in your Ruby CMS, you are wondering how to apply what Steve Reynolds suggests, aren't you?

1. register a Twitter application,
2. ask Twitter team to enable XAuth in such application. They'll enable it for a limited period of time.
3. use XAuth to create as many OAuth access tokens you need:

require 'oauth'
consumer = OAuth::Consumer.new consumer_key, consumer_secret, {:site => 'https://api.twitter.com'}
hash.each do |k, v|
 puts k
 begin
   token =  consumer.get_access_token(nil, {},
     :x_auth_username => v[:username], :x_auth_password => v[:password], :x_auth_mode => client_auth')
   puts %Q(
     :oauth_access_token => '#{token.token}',
     :oauth_access_secret => '#{token.secret}'
   )
 rescue
   puts "exception: #{$!.message}"
 end
 puts '-----'
end

4. store the tokens everywhere you like (I casted them in an initializers)
5. initialize your Twitter client using OAuth and the stored tokens, for example:

auth = Twitter::OAuth.new(consumer_key, consumer_secret)
auth.authorize_from_access(@opts[:oauth_access_token], @opts[:oauth_access_secret])
twitter = Twitter::Base.new(auth)