README.md in russianpost-0.6.0 vs README.md in russianpost-0.7.0

@@ -12,24 +12,24 @@
 
     gem install russianpost
 
 To use gem in a Rails app, add the following to your `Gemfile`:
 
-    gem "russianpost", "~> 0.6.0"
+    gem 'russianpost', '~> 0.7.0'
 
 This gem uses [Savon](http://savonrb.com/), which in turn uses [HTTPI](https://github.com/savonrb/httpi) internally. HTTPI chooses the best HTTP library of those you have installed. For the fastest results add [Curb](https://github.com/taf2/curb) to your `Gemfile`:
 
-    gem "curb"
-    gem "russianpost"
+    gem 'curb'
+    gem 'russianpost'
 
-If you use RussianPost outside Rails, `require "curb"` before requiring RussianPost.
+If you use RussianPost outside Rails, `require 'curb'` before requiring RussianPost.
 
 ## Usage
 
 Initialize a parcel object, passing the package barcode to the constructor:
 
-    parcel = RussianPost::Parcel.new("EC123456789RU")
+    parcel = RussianPost::Parcel.new('EC123456789RU')
 
 Fetch operation history for the parcel:
 
     parcel.operations
 
@@ -51,9 +51,19 @@
     # Recipient
     parcel.recipient
 
     # Type
     parcel.type
+
+### Barcode validator
+
+You can use the included barcode validator separately. It not only validates the format of a barcode, but also calculates check digits and tests barcodes against them.
+
+    barcode = RussianPost::Barcode.new('EC123456789RU')
+    barcode.valid? #=> false
+
+    barcode = RussianPost::Barcode.new('RD025500807SE')
+    barcode.valid? #=> true
 
 ### Operations API
 
 Each `Operation` responds to the following methods. If there is no information, methods return `nil`. See the [wiki](https://github.com/artemshitov/russianpost/wiki) for a list of what else can be returned.