How to use OmniAuth 1.0 RIGHT. NOW.

application.rb

require 'rubygems'
require 'bundler'

Bundler.setup :default
require 'sinatra'
require 'omniauth'
require 'omniauth-contrib'

use Rack::Session::Cookie

use OmniAuth::Builder do
  provider :twitter, ENV['TWITTER_KEY'], ENV['TWITTER_SECRET']
end

get '/' do
  <<-HTML
  <ul>
    <li><a href='/auth/twitter'>Sign in with Twitter</a></li>
  </ul>
  HTML
end

get '/auth/:provider/callback' do
  content_type 'text/plain'
  request.env['omniauth.auth'].inspect
end

Gemfile

gem 'sinatra'
gem 'omniauth',         '~> 1.0.0.alpha', :git => 'git://github.com/intridea/omniauth.git'
gem 'omniauth-oauth',   '~> 1.0.0.alpha', :git => 'git://github.com/intridea/omniauth-oauth.git'
gem 'omniauth-contrib', '~> 1.0.0.alpha', :git => 'git://github.com/intridea/omniauth-contrib.git'