uaiohttpclient: Add usage example.

uaiohttpclient/example.py

@@ -0,0 +1,28 @@
+#
+# uaiohttpclient - fetch URL passed as command line argument.
+#
+import uasyncio as asyncio
+import uaiohttpclient as aiohttp
+
+
+def print_stream(resp):
+    print((yield from resp.read()))
+    return
+    while True:
+        line = yield from reader.readline()
+        if not line:
+            break
+        print(line.rstrip())
+
+def run(url):
+    resp = yield from aiohttp.request("GET", url)
+    print(resp)
+    yield from print_stream(resp)
+
+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()