Update readme and clean up

demo/main/processors/announce-slam-dunks.js

@@ -0,0 +1,13 @@
+export const name = "Announce Slam Dunks";
+
+export const process = (binding, { dunks }) => {
+  const slamDunkKey = dunks?.key ?? "slamDunks";
+
+  for (const entry of binding.entries) {
+    if (slamDunkKey in entry.data) {
+      console.log(`Slam dunk!`);
+    }
+  }
+
+  return binding;
+};