Added the ability to subscribe via email (ref #1)
Merge branch 'subscribe-by-email'

* subscribe-by-email:
  Added the ability to subscribe via email (ref #1)
Merge branch 'master' of https://github.com/andrewjkerr/page-checker

* 'master' of https://github.com/andrewjkerr/page-checker:
  Create README.md