codecation/trailmix — pull request #136 by r00k (2014-11-18 21:44:10+00:00)
Title: Convert prompt and welcome emails to html

Because:

- We'd like to make some style changes to our outgoing emails that
require html.

- It seems as though SendGrid is converting our outgoing messages to
anyway.

This commit:

- Converts the prompt and welcome emails to html.