Create authentication.md

Author: bezhermoso

Resources/doc/authentication.md

@@ -0,0 +1,19 @@
+Swagger UI Bundle
+=================
+
+## Authentication options
+
+`swagger-ui` supports `http` and `oauth` authentication, and both of these can be easily configured in this bundle:
+
+
+### OAuth
+```
+  al_swagger_ui:
+      oauth:
+          enable: true
+          app_name: "Your app name"
+          client_id: "unique_client_id"
+          realm: "your-realms"
+```
+
+Coupled with the correct OAuth authentication definition in your API declarations,