Prep for initial release.

Cleaned up some more old cruft, added config-sample.json entry, and now
there’s a different default grouping of characteristics, which makes
for more optional characteristics on fewer services. The older behavior
(more services per accessory) can be switched on in config.json. The
new default works better in Eve, other clients not so much.

config-sample.json

@@ -71,6 +71,14 @@
             "platform": "YamahaAVR",
             "play_volume": -35,
             "setMainInputTo": "AirPlay" 
+        },
+        {
+            "platform": "ZWayServer",
+            "url": "http://192.168.1.10:8083/",
+            "login": "zwayusername",
+            "password": "zwayuserpassword",
+            "poll_interval": 2,
+            "split_services": false
         }
     ],