add demo script using websockets and asyncio

app.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 from flask import Flask, render_template, url_for, request, redirect, Response, abort, session
 from flask_sock import Sock
 from flask_sqlalchemy import SQLAlchemy
@@ -28,8 +29,8 @@ def get_date():
     date = datetime.now()
     return { "now": date.strftime("%Y-%m-%d") }
 
-@sock.route('/<namespace>')
-def echo(sock,namespace):
+@sock.route('/')
+def echo(sock):
     while True:
         data = json.loads(sock.receive())
         sock.send(json.dumps({"method":"set","name":"test","value":"abcd"}))