README.md in active_validation-4.0.5 vs README.md in active_validation-4.0.6

@@ -48,10 +48,11 @@
 * [Password](#passwordvalidator)
 * [Phone](#phonevalidator)
 * [SEDOL](#sedolvalidator)
 * [Slug](#slugvalidator)
 * [SSN](#ssnvalidator)
+* [Time Zone](#timezonevalidator)
 * [Tracking Number](#trackingnumbervalidator)
 * [Type](#typevalidator)
 * [URL](#urlvalidator)
 * [Username](#usernamevalidator)
 * [UUID](#uuidvalidator)
@@ -913,9 +914,43 @@
 
 ```ruby
 describe User do
   it { should ensure_valid_ssn_format_of(:ssn) }
   it { should_not ensure_valid_ssn_format_of(:name) }
+end
+```
+
+## TimeZoneValidator
+
+**Ex:** 'America/New_York' or 'London'
+
+**Rules:**
+* Any valid time zone
+
+With an ActiveRecord model:
+
+```ruby
+class User < ActiveRecord::Base
+  attr_accessor :time_zone, :name
+  validates :time_zone, time_zone: true
+```
+
+Or any ruby class:
+
+```ruby
+class User
+  include ActiveModel::Validations
+  attr_accessor :time_zone, :name
+  validates :time_zone, time_zone: true
+end
+```
+
+RSpec matcher is also available for your convenience:
+
+```ruby
+describe User do
+  it { should ensure_valid_type_format_of(:time_zone) }
+  it { should_not ensure_valid_type_format_of(:name) }
 end
 ```
 
 ## TrackingNumberValidator