Adds Emails
Merge pull request #2 from net-engine/emails

Adds Emails
Adds presence validations to email attendees and events
Merge pull request #3 from net-engine/email_validations

Adds presence validations to email attendees and events
Adds EmailContent and tests
Merge pull request #4 from net-engine/email_content

Adds EmailContent and tests
Adds EmailDeliveryWorker
Merge pull request #5 from net-engine/email_delivery_worker

Adds EmailDeliveryWorker
Merge branch 'master' into email_validation

Conflicts:
	app/models/attendee.rb