IMAPAuthenticatable
===================
 
A quick library for authenticating against an IMAP server.
 
See http://daniel.collectiveidea.com/blog/tags/imap_authenticatable for more info.
 
It expects a model with a 'username' column. You must pass a host.
 
Example:
 
class User < ActiveRecord::Base
  imap_authenticatable :host => 'mail.example.com'
  
  ...
end
 
 
other options:
	:allow_new_users => true/false
		Alters whether to use find_by_username or find_or_create_by_username.
		The default is true (find or create).
	:default_domain => 'example.com'
		What usernames have at the end.
		Defaults to the :host option.
	:append_domain => false/true
		Should we always add or remove the default_domain (with preceding '@) value?
		The default is false (always remove).
	:ssl => false/true
	  Sets whether to connect via SSL (TLS).  You must have OpenSSL installed.
	  Defaults to false.
	:port => 143
	  Sets the port.  The :ssl option will set the port automatically unless you override it.
	  Defaults to 143 if :ssl => false, 993 if :ssl => true
 
 
Other options may be added as need arises.
 
 
Testing:
 
To mock the IMAP login in your tests, add the following line to the top of your test_helper.rb
  require File.join(File.dirname(__FILE__), '..', 'vendor', 'plugins', 'imap_authenticatable', 'test', 'mocks', 'imap.rb')
 
This mock makes the valid password the reverse of the username (username.reverse).