Register OAuth 2 scheme in API index

Author: rmccue

plugin.php

@@ -19,6 +19,7 @@ function bootstrap() {
 	// Core authentication hooks.
 	add_filter( 'determine_current_user', __NAMESPACE__ . '\\Authentication\\attempt_authentication', 11 );
 	add_filter( 'rest_authentication_errors', __NAMESPACE__ . '\\Authentication\\maybe_report_errors' );
+	add_filter( 'rest_index', __NAMESPACE__ . '\\register_in_index' );
 
 	// Internal default hooks.
 	add_filter( 'oauth2.grant_types', __NAMESPACE__ . '\\register_grant_types', 0 );