add simple websocket example

examples/websocket-chat/client.py

@@ -1,32 +0,0 @@
-import asyncio
-import aiohttp
-
-
-def req1():
-    with aiohttp.MultipartWriter() as writer:
-        writer.append('test')
-        writer.append_json({'passed': True})
-
-    resp = yield from aiohttp.request(
-        "post", 'http://localhost:8080/multipart',
-        data=writer, headers=writer.headers)
-    print(resp)
-    assert 200 == resp.status
-
-
-def req2():
-    with aiohttp.MultipartWriter() as writer:
-        writer.append('test')
-        writer.append_json({'passed': True})
-        writer.append(open('src/main.rs'))
-
-    resp = yield from aiohttp.request(
-        "post", 'http://localhost:8080/multipart',
-        data=writer, headers=writer.headers)
-    print(resp)
-    assert 200 == resp.status
-
-
-loop = asyncio.get_event_loop()
-loop.run_until_complete(req1())
-loop.run_until_complete(req2())