Merges the contents of index.html into the README for the Endpoints sample. (#570)

Removes index.html and adds two new sections in the README for viewing
the Endpoints graphs and Swagger UI.

Author: wmwong

appengine/flexible/endpoints/README.md

@@ -172,3 +172,16 @@ $ gcloud app deploy app.yaml --project=YOUR-CLIENT-PROJECT-ID
 
 Your client app is now deployed at https://YOUR-CLIENT-PROJECT-ID.appspot.com. When you access https://YOUR-CLIENT-PROJECT-ID.appspot.com, your client calls your server project API from
 the client's service account using Google ID token.
+
+## Viewing the Endpoints graphs
+
+By using Endpoints, you get access to several metrics that are displayed graphically in the Cloud Console.
+
+To view the Endpoints graphs:
+
+1. Go to the [Endpoints section in Cloud Console](https://console.cloud.google.com/endpoints) of the project you deployed your API to.
+2. Click on your API to view more detailed information about the metrics collected.
+
+## Swagger UI
+
+The Swagger UI is an open source Swagger project that allows you to explore your API through a UI. Find out more about it on the [Swagger site](http://swagger.io/swagger-ui/).

appengine/flexible/endpoints/index.html

@@ -22,29 +22,14 @@
 import json
 import logging
 
-from flask import Flask, jsonify, request, send_from_directory
+from flask import Flask, jsonify, request
 from flask_cors import cross_origin
 from six.moves import http_client
-import yaml
 
 
 app = Flask(__name__)
 
 
-@app.route('/', methods=['GET'])
-def index():
-    """Shows the index page."""
-    return send_from_directory('.', 'index.html')
-
-
-@app.route('/api-docs', methods=['GET'])
-def swagger_json():
-    """Serves up the Swagger spec for the API."""
-    with open('swagger.yaml', 'r') as f:
-        spec = yaml.safe_load(f)
-    return jsonify(spec)
-
-
 @app.route('/echo', methods=['POST'])
 def echo():
     """Simple echo service."""

appengine/flexible/endpoints/main.py

@@ -29,16 +29,6 @@ def client(monkeypatch):
     return client
 
 
-def test_index(client):
-    r = client.get('/')
-    assert r.status_code == 200
-
-
-def test_api_docs(client):
-    r = client.get('/api-docs')
-    assert r.status_code == 200
-
-
 def test_echo(client):
     r = client.post(
         '/echo',