Update README.md

Author: emmambd

README.md

@@ -66,9 +66,16 @@ Contains the JSON schemas used to validate the feeds in the integration tests.
 | --minimum_latitude    | Latitude | System generated                    | The minimum latitude for the feed's bounding box.  
 | --maximum_latitude    | Latitude | System generated                    | The maximum latitude for the feed's bounding box.  
 | --minimum_longitude    | Longitude | System generated                    | The minimum longitude for the feed's bounding box.  
-@@ -79,7 +83,7 @@ Contains the JSON schemas used to validate the feeds in the integration tests.
-| - latest | URL | System generated | A stable URL for the latest dataset of a feed. |
-|- license |URL| Optional     | The license information for the direct download URL.  |
+| --maximum_longitude    | Longitude | System generated                    | The maximum longitude for the feed's bounding box.  
+| --extracted_on   | Date and Time | System generated                    | The date and timestamp the bounding box was extracted on in UTC.  
+| provider     | Text | Required                   | A commonly used name for the transit provider included in the feed.  |
+| feed_contact_email | Text | Optional | The contact information for the data producer of the feed, discovered via feed_info.feed_contact_email in the feed, the provider's website, or the Mobility Database contributor form. | 
+| name        |  Text |Optional              | An optional description of the feed, e.g to specify if the feed is an aggregate of multiple providers, or which network is represented by the feed. |
+|urls| Object | Required | Contains URLs associated with the feed in the `direct_download_url`, `latest`, and `license` fields. |
+|- direct_download |URL|Optional     | URL that automatically opens the feed. |
+|- authentication_type |Enum|Optional | The **authentication_type** field defines the type of authentication required to access the URL. Valid values for this field are: <ul> <li>**0** or **(empty)** - No authentication required.</li><li>**1** - The authentication requires an API key, which should be passed as value of the parameter `api_key_parameter_name` in the URL. Please visit URL in `authentication_info_url` for more information. </li><li>**2** - The authentication requires an HTTP header, which should be passed as the value of the header `api_key_parameter_name` in the HTTP request. </li></ul> When not provided, the authentication type is assumed to be **0**.|
+|- authentication_info_url | URL| Conditionally required | If authentication is required, the **authentication_info_url** field contains a URL to a human-readable page describing how the authentication should be performed and how credentials can be created. This field is required for `authentication_type=1` and `authentication_type=2`. |
+|- api_key_parameter_name |Text|Conditionally required | The **api_key_parameter_name** field defines the name of the parameter to pass in the URL to provide the API key. This field is required for `authentication_type=1` and `authentication_type=2`.   |
 
 #### GTFS Realtime Schema