Change to boot code, instead of widget

apps.json

@@ -2133,14 +2133,14 @@
   { "id": "widgattbat",
     "name": "BLE GATT Battery Service",
     "shortName":"BLE Battery Service",
-    "icon": "widget.png",
+    "icon": "bluetooth.png",
     "version":"0.01",
     "description": "Adds the GATT Battery Service to advertise the percentage of battery currently remaining over Bluetooth.\n",
-    "tags": "ble,bluetooth,gatt,widget",
+    "tags": "battery,ble,bluetooth,gatt,widget",
     "type": "widget",
     "readme": "README.md",
     "storage": [
-      {"name":"gattbat.wid.js","url":"widget.js"}
+      {"name":"gattbat.boot.js","url":"boot.js"}
     ]
   }
 ]

apps/widgattbat/boot.js

@@ -7,10 +7,4 @@
   if (!Bangle.bleAdvert) Bangle.bleAdvert = {};
   setInterval(advertiseBattery, 60 * 1000);
   advertiseBattery();
-
-  WIDGETS["gattbat"]={
-    area:"tl",
-    width:0,
-    draw:function() {}
-  };
-})()
+})();