Add SendGrid config for Heroku Cedar stack

config/environment.rb

@@ -3,3 +3,14 @@ require File.expand_path('../application', __FILE__)
 
 # Initialize the rails application
 Apollo::Application.initialize!
+
+# SendGrid config for Heroku Cedar stack
+ActionMailer::Base.smtp_settings = {
+  :address        => 'smtp.sendgrid.net',
+  :port           => '587',
+  :authentication => :plain,
+  :user_name      => ENV['SENDGRID_USERNAME'],
+  :password       => ENV['SENDGRID_PASSWORD'],
+  :domain         => 'heroku.com',
+  :enable_starttls_auto => true
+}