add yaml to generate

swagger.yaml

+swagger: "2.0"
+info:
+  description: "Android viewer for xkcd comics"
+  version: "1.0.0"
+  title: "XKCD Browser"
+  license:
+    name: "Creative Common"
+    url: "https://creativecommons.org"
+host: "xkcd.com"
+basePath: "/"
+tags:
+- name: "comic"
+  description: "A comic strip"
+  externalDocs:
+    description: "Find out more"
+    url: "https://xkcd.com/json.html"
+schemes:
+- "https"
+paths:
+  /{id}/info.0.json:
+    get:
+      tags:
+      - "comic"
+      summary: "Get a comic"
+      description: ""
+      operationId: "getComic"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - in: "path"
+        name: "id"
+        description: "Number of the comic"
+        required: true
+        type: "integer"
+        format: "int64"
+      responses:
+        200:
+          description: "successful operation"
+          schema:
+            $ref: "#/definitions/Comic"
+
+definitions:
+  Comic:
+    type: "object"
+    properties:
+      month:
+        type: "string"
+      num:
+        type: "integer"
+        format: "int32"
+      link:
+        type: "string"
+      year:
+        type: "string"
+      news:
+        type: "string"
+      safe_title:
+        type: "string"
+      transcript:
+        type: "string"
+      alt:
+        type: "string"
+      img:
+        type: "string"
+      title:
+        type: "string"
+      day:
+        type: "string"
+externalDocs:
+  description: "Find out more about Swagger"
+  url: "http://swagger.io"
\ No newline at end of file