Issue #141: Waybar subscription missed opportunity (#142)

* add notifications number in text field

* include a mention about this in the README

* fix the linting issue... hopefully

* print the count as a uint directly

README.md

@@ -215,6 +215,15 @@ Waybar css file
 }
 ```
 
+Alternatively, the number of notifications can be shown by adding `{}` anywhere in the `format` field in the Waybar config
+
+```json
+  "custom/notification": {
+    "format": "{} {icon}",
+    ...
+  },
+```
+
 ## Screenshots
 
 ![Screenshot of desktop notification](./assets/desktop.png)

src/client.vala

@@ -88,8 +88,8 @@ private void on_subscribe_waybar (uint count, bool dnd, bool cc_open) {
     }
 
     print (
-        "{\"text\": \"\", \"alt\": \"%s\", \"tooltip\": \"%s\", \"class\": %s}\n",
-        state, tooltip, _class);
+        "{\"text\": \"%u\", \"alt\": \"%s\", \"tooltip\": \"%s\", \"class\": %s}\n",
+        count, state, tooltip, _class);
 }
 
 private void print_subscribe_waybar () {