Update README.md

Author: nilportugues

README.md

@@ -95,11 +95,9 @@ Mappings are also used to hydrate data into it's entities again if the hydrator
 
 ## Entity class
 
-Remember, an Entity must implement the `Identity` interface to work with SqlRepository. 
+Remember, an Entity must implement the `Identity` interface to work with SqlRepository. This Entity can be any class of yours. 
 
 ```php
-namespace NilPortugues\Example\AutoGeneratedId;
-
 use NilPortugues\Foundation\Domain\Model\Repository\Contracts\Identity;
 
 class User implements Identity
@@ -147,8 +145,6 @@ class User implements Identity
 All methods from Mapping interface are mandatory. 
 
 ```php
-namespace NilPortugues\Example\AutoGeneratedId;
-
 use NilPortugues\Foundation\Domain\Model\Repository\Contracts\Mapping;
 
 class UserMapping implements Mapping