README.md in auto_data-0.1.1 vs README.md in auto_data-0.1.2

@@ -31,10 +31,23 @@
 if not use using cucumber, place to the variable the project root path in your ruby class
 ```ruby
 ENV["AUTO_DATA_PATH"] =  <<YML path files>>
 ```
 ### Sample
+YML's [sample data](https://github.com/alekxaguilar/auto_data/tree/master/config/data)
+
+Optional YML file structure:
+
+```yml
+default_key: user_role2 #optional
+
+user_role1:
+    userid: userid1
+user_role2:
+    userid: userid2
+```
+Code using custom key and sub-key words
 ```ruby
 
     require 'auto_data'
     #Set configuration file path (Assumming that class is under root folder)
 
@@ -50,9 +63,35 @@
     puts test.users('mananger.username')     #=> Batman
 
     #Environment file
     puts test.environment('testing.base_url') #=> http://testing.sample.com
 
+
+```
+Using custom default_key option
+```ruby
+
+    #Create AutoData object
+    autodata = AutoData::Parse.new
+
+    #users.yml file must has default_key, i.e. 'default_key: manager'
+    puts test.users('login')        #=> manager_id
+    puts test.users('password')     #=> zaq12wsx1
+    puts test.users('username')     #=> Batman
+
+
+
+```
+Changing default_key from code
+
+```ruby
+
+    test.change_scope('users','customer')
+
+    #print again
+    puts test.users('login')        #=> customer_id
+    puts test.users('password')     #=> zaq12wsx2
+    puts test.users('username')     #=> Robin
 
 ```
 
 ## Contributing