Fixes #75 - configurations to enable Contact form to send email. Adds a setup_mail.rb.template which is intended to be copied to setup_mail.rb and configured with SMTP mail credentials. Configures development.rb and production.rb for SMTP use. Added section to README to list all configurations needed in order to get Contact form emailing working.
Merge pull request #99 from gwu-libraries/t75-mailboxer

T75 mailboxer