Compatibility with Rails 4
Code review fixes from mitio
Merge pull request #6 from dorner/master

Compatibility with Rails 4
Use the new AR methods in both Rails 3 and 4
v0.6.3 - rails 4 compatibility
Add capability to add attachments to mail campaigns
Merge pull request #7 from dorner/master

Add capability to add attachments to mail campaigns
Add info for campaign attachments to the readme
v0.7.0 - attachments support
Merge pull request #1 from mitio/master

merge