better exposer documentation

docs/exposers.md

@@ -6,20 +6,39 @@ Exposers are declarations and methods that expose the items of your repository i
 
 ### Name
 
+String $name
+
 The name of the Exposer.
 
 ### Slug
 
+String $slug
+
 A URL friendly version of the Exposer name, to be used as a parameter to the API request informing you want to get the data using this exposer.
 
 
 ### Supported Mapping Standard
 
-A list of mapping standards that is exposer supports. This means that whenever someone makes a request to receive that via this exposer, he/she will also be able to choose in which mapping standar they want the content to be served.
+Array or true $mappers
+
+A list of mapping standards that is exposer supports. This means that whenever someone makes a request to receive that via this exposer, he/she will also be able to choose in which mapping standar they want the content to be served, or true for serve all mappers.
 
 
 ### Methods
 
-Every exposer have to implement PHP methods that will build the API response. 
+Every exposer have to implement PHP methods that will build the API response and have to be parent of Tainacan\Exposers\Types\Type
+
+####callback rest response
+
+\WP_REST_Response rest_request_after_callbacks will receve a array of elements to be exposed, and api request, server and reponse.
+
+	/**
+		 * Change response after api callbacks
+		 * @param \WP_REST_Response $response
+		 * @param \WP_REST_Server $handler
+		 * @param \WP_REST_Request $request
+		 * @return \WP_REST_Response
+		 */
+		public function rest_request_after_callbacks( $response, $handler, $request ); 
 
 Optionally, an exposer can also implement a method to print data in the `HEAD` section of the HTML when visiting an item page. For example, JSON-LD exposer can add a JSON-LD object to the head of the page of every item in your collection.