How to add Devarts dotConnect provider to Entity Framework?

I'm trying to follow this Devarts tutorial of Entity Framework: http://www.devart.com/dotconnect/oracle/articles/tutorial_ef.html

But when I try to create a connection of Entity Data Model, I cant find the dotConnect provider.

I already add that text in .config file

<provider invariantName="Devart.Data.Oracle" 
          type="Devart.Data.Oracle.Entity.OracleEntityProviderServices, Devart.Data.Oracle.Entity, Version=8.4.389.0, Culture=neutral, PublicKeyToken=09af7300eec23701" />

• Visual Studio version: 2013
• Devart.Data.Oracle.Entity version: 8.4.389.0
• Entity Framework: 6.0

This is about versions, I was using Express version that not supports Entity Framework. You need Professional or Developer version if you want to use with Entity Framework:
http://www.devart.com/dotconnect/oracle/editions.html

But here you can find more information about Provider Registration:
http://blog.devart.com/entity-framework-6-support-for-oracle-mysql-postgresql-sqlite-and-salesforce.html#ProviderRegistration