More docs.

README.markdown

@@ -64,3 +64,36 @@ class User < ActiveRecord::Base
   acts_as_authentic
 end
 ```
+
+## Configuring authlogic
+
+We can also [configure various authlogic parameters](http://rdoc.info/github/binarylogic/authlogic/master/Authlogic/ActsAsAuthentic/Password/Config) using the ```acts_as_authentic``` method by giving it a block. For example, during testing, I disabled the password confirmation when I created a user in the rails console, just to make things easier.
+
+```ruby
+acts_as_authentic do |c|
+  c.require_password_confirmation = false
+end
+```
+
+## Creating our first user
+
+We'll do this manually, in ```rails c``` (the console). Since we configured away the confirmation password, all we need is to provide a login ID, an email, and a password.
+
+```ruby
+pry(main)> User.create(:login => 'login1', :password => 'login1', :email => 'foo@bar.baz').save!
+```
+
+By default, authlogic requires an email address, and validates the password length. How can we change the required length? By using a configuration option as described above. The documentation lists the default, but let's use [Pry](https://github.com/pry/pry) to do a little spelunking.
+
+```ruby
+pry(main)> cd User
+pry(#<Class:0x1041dcc20>):1> validates_length_of_password_field_options
+=> {:minimum=>4, :if=>:require_password?}
+pry(#<Class:0x1041dcc20>):1> validates_format_of_email_field_options
+=> {:with=>/^[A-Z0-9_\.%\+\-']+@(?:[A-Z0-9\-]+\.)+(?:[A-Z]{2,4}|museum|travel)$/i,
+ :message=>"should look like an email address."}
+ pry(#<Class:0x1041dcc20>):1> validates_length_of_email_field_options
+ => {:maximum=>100}
+ ```
+
+Note that the length validations accept the usual length validation options.