fix(Sales Demo App): Fixes sending of email. (#1509 - [LL-103](https://learningpool.atlassian.net/browse/LL-103))

Author: lydiamross

lib/helpers/email.js

@@ -7,7 +7,7 @@ import htmlToText from 'html-to-text';
 import moment from 'moment';
 import { promisify } from 'bluebird';
 
-const defaultMailOptions = {
+export const defaultMailOptions = {
   from: `${defaultTo(process.env.LL_FROM_NAME, 'Learning Locker')} ` +
     `<${defaultTo(process.env.LL_FROM_EMAIL, 'noreply@learninglocker.net')}>`
 };