0.0.6
 - drop rest-client, use pure net/http instead

0.0.5
 - added Intercom::User.find_by_email, Intercom::User.find_by_user_id
 - add support for Intercom::User.all.each, Intercom::User.all.map, Intercom::User.all.count

0.0.4
 - allow to directly set custom_data hash on Intercom::User user.custom_data = {...}

0.0.3
 - renamed Intercom.secret_key to Intercom.api_key for consistency throughout our app and docs

0.0.2
 - updates to reflect changes to resources served by the api

0.0.1
 - experimental version