Add sort to doc

Author: DanyilNefodov

README.md

@@ -239,10 +239,11 @@ print result.json()
 
 #### Using pagination
 
-Some requests (for example [GET /contact](https://dev.mailjet.com/email/reference/contacts/contact/#v3_get_contact)) has `limit` and `offset` query string parameters. These parameters could be used for pagination.
+Some requests (for example [GET /contact](https://dev.mailjet.com/email/reference/contacts/contact/#v3_get_contact)) has `limit`, `offset` and `sort` query string parameters. These parameters could be used for pagination.
 `limit` `int` Limit the response to a select number of returned objects. Default value: `10`. Maximum value: `1000`
-`offset` `int` Retrieve a list of objects starting from a certain offset. Combine this query parameter with Limit to retrieve a specific section of the list of objects. Default value: `0`
-Next example returns 40 contacts starting from 51th record:
+`offset` `int` Retrieve a list of objects starting from a certain offset. Combine this query parameter with `limit` to retrieve a specific section of the list of objects. Default value: `0`
+`sort` `str` Sort the results by a property and select ascending (ASC) or descending (DESC) order. The default order is ascending. Keep in mind that this is not available for all properties. Default value: `ID asc`
+Next example returns 40 contacts starting from 51th record sorted by `Email` field descendally:
 
 ```python
 import os
@@ -255,6 +256,7 @@ mailjet = Client(auth=(api_key, api_secret))
 filters = {
     "limit": 40,
     "offset": 50,
+    "sort": "Email desc",
 }
 result = mailjet.contact.get(filters=filters)
 print(result.status_code)