Enables following a series of redirects (shortened urls)
Tested on Ruby 1.8.7 and 1.9.3
require 'unwind'
follower = Unwind::RedirectFollower.new('http://j.mp/xZVND1')
follower.resolve
assert_equal 'http://ow.ly/i/s1O0', follower.final_url
assert_equal 'http://j.mp/xZVND1', follower.original_url
assert_equal 2, follower.redirects.count
Most of the code is based on John Nunemaker's blog post Following Redirects with Net/HTTP.
Provided under the Do Whatever You Want With This Code License.