README.md in simple_model-0.2.6 vs README.md in simple_model-1.0.0

@@ -14,25 +14,55 @@
 ## Usage
 ### Basic
       require 'simple_model'
 
         class Item < SimpleModel::Base
+          save :save_item, :rollback => :undo_save
           has_booleans :active, :default => true
           has_booleans :paid
           has_currency :price, :default => 10.0
-          has_dates :created_at
+          has_times :created_at, :default => :now
           validates_inclusion_of :price, :in => 10..25
+          
+          def now
+            Time.now
+          end
+
+          def file_name
+           @file_name ||= "receipt-#{self.created_at.to_i}.txt"
+          end
+          
+          def save_item
+            begin
+              File.open(self.file_name, 'w') do |receipt|
+                receipt.puts self.created_at
+                receipt.puts "price:#{self.price}"
+                receipt.puts "paid:#{self.paid}"
+              end
+            rescue
+              return false
+            end
+            true
+          end
+
+          def undo_save
+            File.delete(file_name)
+          end
         end
         
-        item = Item.new(:created_at => "12/30/2010")
-        item.created_at # => #<Date: 2010-12-30 (4911121/2,0,2299161)>
+        item = Item.new
+        item.created_at # => 2011-10-23 21:56:07 -0500
+        item.created_at # => 2011-10-23 21:56:08 -0500
         item.active     # => true
         item.paid       # => nil
         item.paid?      # => false
         item.price      # => 10.0
         item.price = '$1,024.00'
         item.price      # => #<BigDecimal:100c989d8,'0.1024E4',9(27)>
         item.valid?     # => false
+        item.price = 15 
+        item.save       # => true
+                        
 
 
 ## Contributing to simple_model
  
 * Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet