* Made Ruby 2.0.0 the default, and removed the ruby-falcon role.
  The Falcon patchset is seemingly no longer being maintained
  and the last release it supports has several security issues.
  * The patchset is for 1.9.3-p327, while stable is now at 1.9.3-p448

* The deploy-user role now uses with_files to populate SSH keys

* Refactored the nginx-passenger role so it relies heavily on
  variables, which makes it much easier to deal with upgrades

* Upgraded to Nginx 1.4.2 and Passenger 4.0.14

* Switched to the action shorthand in the SSH restart handler

* Fixed a bug in the SSH role that caused the PasswordAuthentication
  line to be placed in the wrong section