uaiohttpclient: Update example client code.

Signed-off-by: Mark Blakeney <mark.blakeney@bullet-systems.net>

micropython/uaiohttpclient/example.py

@@ -1,31 +1,16 @@
 #
 # uaiohttpclient - fetch URL passed as command line argument.
 #
+import sys
 import uasyncio as asyncio
 import uaiohttpclient as aiohttp
 
 
-def print_stream(resp):
-    print((yield from resp.read()))
-    return
-    while True:
-        line = yield from resp.readline()
-        if not line:
-            break
-        print(line.rstrip())
-
-
-def run(url):
-    resp = yield from aiohttp.request("GET", url)
+async def run(url):
+    resp = await aiohttp.request("GET", url)
     print(resp)
-    yield from print_stream(resp)
+    print(await resp.read())
 
 
-import sys
-import logging
-
-logging.basicConfig(level=logging.INFO)
 url = sys.argv[1]
-loop = asyncio.get_event_loop()
-loop.run_until_complete(run(url))
-loop.close()
+asyncio.run(run(url))