add uid to the strategy, fetch from token params
better example, show that user ids are uuids
also assert the omniauth provider name is set correctly
support fetch_info option to make API call for more account info
update readme for fetch_info
add extra too, containing all the info returned by the heroku api
update readme to refer to extra
oops, actually authenticate with Heroku :}
cosmetics
1.9 style hashes
cosmetics
oops, use variable
Merge pull request #13 from heroku/pedro-add-info

Add uid/info/extra to the strategy