Added request proxy for action dispatch as show in this thread: https://github.com/oauth/oauth-ruby/issues/13
Updated version
Changed action_dispatch_request to use request.query_string
Split up Rails 2 and Rails 3 specific monkey patches into separate files and fix Rails 3 test support. Also rename client/action_controller_request to client/action_pack.
Update Gem spec
Merge branch 'pr-55'

Conflicts:
	HISTORY
	lib/oauth.rb
	oauth.gemspec
get tests running in rails 3

This probably isn't a complete solution yet, it just fixes an error on
test run startup.