README.md in ohm-1.4.0 vs README.md in ohm-2.0.0.alpha1

@@ -441,11 +441,12 @@
 lookups.
 
 In the `Event` example, the index on the name attribute will
 allow for searches like `Event.find(:name => "some value")`.
 
-Note that the methods {Ohm::Model::Set#find find} and
+Note that the {Ohm::Model::Validations#assert_unique assert_unique}
+validation and the methods {Ohm::Model::Set#find find} and
 {Ohm::Model::Set#except except} need a corresponding index in order to work.
 
 ### Finding records
 
 You can find a collection of records with the `find` method:
@@ -459,14 +460,11 @@
 
 ```ruby
 # Find all users from Argentina
 User.find(:country => "Argentina")
 
-# Find all active users from Argentina
-User.find(:country => "Argentina", :status => "active")
-
-# Find all active users from Argentina and Uruguay
-User.find(status: "active").combine(country: ["Argentina", "Uruguay"])
+# Find all activated users from Argentina
+User.find(:country => "Argentina", :status => "activated")
 
 # Find all users from Argentina, except those with a suspended account.
 User.find(:country => "Argentina").except(:status => "suspended")
 
 # Find all users both from Argentina and Uruguay