mailjet/mailjet-gem — pull request #3 by skelz0r (2013-03-08 12:42:32+00:00)
Title: Add a method to set the HTML for a campaign

According to: https://eu.mailjet.com/docs/api/message/sethtmlcampaign

*Note*: I changed the "dup" campaign html because of "campaign" is sending before my test (and apparently it's impossible to change html for it).