Talk Email Notifications to Admins Issue #27

Issue #27

Please review, this is using smtp with Sendgrid.  I thought it would be nice to use smtp since it seems easier to upgrade to Rails 4 and change to another email provider if needed.  This doesn't yet include the option flag for admins to opt-in or out of the email notifications.  I can do that after this is working.

Heroku Documentation
https://addons.heroku.com/sendgrid
https://devcenter.heroku.com/articles/sendgrid#ruby-rails

Here's the tutorial I based this off
http://sendgrid.com/docs/Integrate/Frameworks/rubyonrails.html
http://railsapps.github.io/rails-environment-variables.html