jorgemanrubia/mailgun_rails — pull request #23 by onemanstartup (2014-12-12 05:40:07+00:00)
Title: attachments support(with inlines)

https://github.com/jorgemanrubia/mailgun_rails/pull/10 as mentioned here rest_client demands files. But i managed to shim stringIO by providing empty path.
Also I made support for inline images.
thanks @shawnjung for initial version.