Add OpenAPI schema endpoint to API (#147)

README.md

@@ -474,6 +474,11 @@ header to `Token <user-key>`. E.g.
 If the `Authorization` header is not set or the key is not valid, the API will
 return `403 Forbidden` with additional details in the response body.
 
+### Schema
+
+A live version of the API schema in the [OpenAPI format](https://swagger.io/specification/)
+is available at the `/api/scehma` path of a running instance.
+
 ### `GET` Method
 
 #### Request

api/urls.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 from django.urls import include, path
 from rest_framework import routers
+from rest_framework.schemas import get_schema_view
 
 from . import views
 
@@ -22,5 +23,10 @@ urlpatterns = [
     path('api/auth/', include(
         'rest_framework.urls',
         namespace='rest_framework'
-    ))
+    )),
+    path('api/schema', get_schema_view(
+        title='Baby Buddy API',
+        version=1,
+        description='API documentation for the Baby Buddy application'
+    ), name='openapi-schema'),
 ]