better config integration

script/server.py

@@ -1,6 +1,12 @@
-from aiohttp.web import run_app
+from asyncio import get_event_loop
 from risotto import get_app
 
 if __name__ == '__main__':
-    run_app(get_app())
+    loop = get_event_loop()
+    loop.run_until_complete(get_app(loop))
+    try:
+        loop.run_forever()
+    except KeyboardInterrupt:
+        pass
+